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Thornton’s weekend weather starts out mild but unsettled conditions will dominate the period

We get to enjoy one more, mild, dry day on Friday. Then, Mother Nature puts a kibosh on that and makes a mess of things.

For today, we again see temperatures well above normal, topping out in the mid-70s. We will, however, have a pretty solid wave cloud overhead so look for it to be mostly cloudy. Tonight, the first of a series of systems moves in. We may see a few drops of rain this evening then chances for showers increase after midnight and last into early tomorrow. Overnight lows will be in the low to mid-40s.

Saturday, mostly cloudy skies will be above and we cool down. Highs will be in the upper 50s. Some light rain showers will be possible throughout the day. Saturday evening, shower activity looks to pick up. We then stand a chance to see a few snowflakes in the pre-dawn hours Sunday morning. No accumulation is expected. Lows Saturday night will drop to the mid-30s.

Sunday morning may see some snow, again not much at all is expected though. Then, some sprinkles / light showers will be possible throughout the day Sunday. Highs Sunday will top out around 50 degrees. Have a great weekend!

March 23 to March 29: This Week in Denver Weather History

This Week in Denver Weather History

Heavy snow and wind are two common conditions during early spring in Denver and our look back at this week in Denver history shows numerous notable events with those.

From the National Weather Service:

22-23

In 1936…heavy snowfall of 7.7 inches was measured in downtown Denver. The heavy wet snowfall formed a thick coating of snow on trees and shrubs…but caused little damage. North winds were sustained to 15 mph.

In 1984…around a half foot of new snow fell across metro Denver…causing flight delays at Stapleton International Airport where snowfall totaled 6.0 inches and north winds gusted to 31 mph. Up to a foot of snow fell in the foothills. Icy roads produced numerous traffic accidents.

In 2011…strong bora winds developed along the Front Range following the passage of a storm system. Peak wind gusts included: 87 mph at the National Wind Technology Center; 82 mph…6 miles northwest of Boulder; 72 mph at Front Range airport in Broomfield; 71 mph at Longmont; and 64 mph…4 miles west of Lakewood. At Denver International Airport…a peak wind gust of 48 mph from the west was observed on the 22nd.

In 2013…a wet early spring snowstorm brought heavy snow to parts of the Front Range foothills and urban corridor. The heaviest snowfall occurred near the Front Range foothills and palmer divide. Near blizzard conditions forced the closure of interstate 70 east of Denver. In the foothills… Storm totals included: 14.5 inches near Conifer; 14 inches just southwest of Eldorado Springs and Intercanyon; 13 inches near Indian Hills; 12.5 inches near Pinecliffe; 11.5 inches near Golden; 11 inches near Jamestown and Roxborough; 10.5 inches near Brookvale and 10 inches at Genesee. Across the urban corridor and Palmer Divide… Storm totals included: 12.5 inches…8 miles southeast of Watkins; 10.5 inches in Boulder…Centennial and Northglenn; 9.5 inches…just south of Aurora; 9 inches in Westminster; 8 inches at Lafayette; 7.5 inches near Morrison; 7 inches in Arvada…Bennett…Brighton; 6 inches in Highlands Ranch… Longmont…Louisville and Thornton. Officially…11.6 inches of snow fell at DIA from the evening of the 22nd to the afternoon of the 23rd…which set a new two-day snowfall record in Denver for the date. In addition…a peak wind gust to 33 mph was observed from the east on the 22nd with a gust to 30 mph from the north on the 23rd.

In 2016…a powerful blizzard developed across the Front Range of Colorado late on the 22nd and continued through much of the 23rd. The storm tracked east-southeast across Utah on the 22nd…and then into southeast Colorado by the morning of the 23rd. The storm rapidly intensified as it reached eastern Colorado…producing extremely heavy and intense snowfall with snowfall rates exceeding 3 inches per hour at times. In addition to heavy snow…strong winds gusting in excess of 50 mph east of I-25 produced widespread blizzard conditions and zero visibilities. The storm initially began with rain on the plains…but quickly changed over to snow during the early morning hours of the 23rd. Snowfall rates of 1 to 2 inches per hour were common…with several inches of snow already accumulating for the morning commute. Many roads became impassable due to the depth of fallen snow…drifting snow…and near zero visibilities during the day. During the peak of the storm… snowfall rates reached or exceeded 3 inches per hour. Widespread road closures occurred…including I-76 from northeast of Denver to the Nebraska state line…I-70 east of Denver to the Kansas state line…and much of I-25… from near Castle Rock to Colorado Springs. The Colorado Department of Transportation estimated over two thousand vehicles became trapped on I-25 near Monument Hill alone… with hundreds of stuck or abandoned cars elsewhere. Numerous power outages occurred as heavy wet snow accumulated on trees…despite the strong winds. At the peak…several hundred thousand residents along the Front Range were without power. Denver International Airport was closed for 7 hours during and just after the peak of the blizzard…with around 1300 cancelled flights. The power outages shut down the fuel farm pumps…the deicing facility…as well as train service to the concourses at the airport. Pea Boulevard…the main road to the airport…was impassable for much of the day. It was the first time since December 21…2006 that Denver International Airport had been shut down due to extreme winter weather conditions. One to 2 feet of snow fell across much of the Front Range Foothills and Urban Corridor. In the foothills of northern Jefferson County…31.5 inches of snowfall measured at Pinecliffe. Most of the snow fell within a 12-hr period from the early morning into the afternoon. A peak wind gust of 59 mph recorded at Denver International Airport. South of Denver…over the Palmer Ridge…12 to 18 inches of snow was reported…with 6 to 10 inches across the adjacent plains. The official snowfall measurement at Denver International Airport was 13.1 inches. In addition…the snow was very heavy and wet…with many areas receiving 1 to 2 inches precipitation. In the foothills…some locations received nearly 3 inches of water from this storm.

22-24

In 1965…a vigorous cold front swept across metro Denver late on the afternoon of the 22nd with east-northeast winds gusting to 38 mph causing some blowing dust. Snowfall from the storm totaled 4.4 inches at Stapleton International Airport. Temperatures on the 22nd dropped from a maximum of 63 degrees to 18 degrees in just 10 hours and dipped to 3 degrees below zero on the morning of the 24th. Maximum temperatures warmed to only 19 degrees on the 23rd and 18 degrees on the 24th.

23

In 1887…west winds sustained to 44 mph warmed the temperature to a high of 66 degrees.

In 1910…southwest winds were sustained to 40 mph. The Chinook winds warmed the temperature to a high of 73 degrees.

In 1913…west winds were sustained to 40 mph with a gust to 44 mph.

In 1951…a Chinook wind gust to 56 mph was recorded at Stapleton International Airport.

In 1957…strong north winds gusting to 62 mph reduced the visibility at times to 1 mile in blowing dust at Stapleton Airport as metro Denver dodged a major spring storm… Which produced heavy rain…snow…wind…and dust over eastern Colorado on the 22nd through the 25th. Snow drifted to 15-foot depths in some areas. All traffic was blocked…power lines were downed…and livestock and crop losses were high.

In 1994…strong winds raked the eastern foothills. While the highest winds occurred north of metro Denver…wind gusts to 74 mph were recorded atop Squaw Mountain near Idaho Springs and to 70 mph at Rocky Flats north of Golden. West wind gusts to 40 mph were recorded at Stapleton International Airport.

In 2005…lightning struck the roof of a home in paradise hills near Genesee. About 5 percent of the residence was damaged by the resulting fire.

In 2018…intense outflow winds spread south to north across Denver International Airport and points south and east. Peak wind gusts included: 67 mph at Limon Airport…66 mph near Bennett…63 mph at Denver International Airport…62 mph at Front Range Airport…61 mph…9 miles north of Manila Village; with 58 mph at Woodlin School.

23-24

In 1909…post-frontal rain on the 23rd changed to heavy snow during the evening and continued through the morning of the 24th. Snowfall totaled 13.8 inches. Rain and melted snow… Totaled 2.43 inches…which was the record greatest 24 hour precipitation ever recorded in March at that time. A thunderstorm of moderate intensity occurred on the 23rd in advance of the cold front. North winds were sustained to 27 mph overnight.

In 1990…several hours of freezing drizzle covered roadways with a thin layer of “black ice” which caused nearly 100 traffic accidents across metro Denver. In Boulder…snow and freezing rain caused numerous accidents and brief power outages. Snow in Boulder ranged from an inch east of town to 4 to 5 inches near Table Mesa. At times thunder was heard during the snow. Snowfall totaled only 0.6 inch at Stapleton International Airport where northwest winds gusted to 30 mph on the 23rd.

In 1995…high winds developed late on the 23rd and continued through the 24th. A few windows were blown out of a Denver high rise building…spraying glass on the sidewalks and streets below. Southeast winds gusted to 48 mph at Denver International Airport on the 23rd.

In 1996…the third storm in 10 days brought heavy snow to the mountains…foothills…and metro Denver. Snowfall totaled 18 inches at Golden Gate Canyon and 10 inches at Nederland in the foothills. Across metro Denver… Snowfall ranged from 4 to 8 inches. At the site of the former Stapleton International Airport…snowfall totaled 6.5 inches with most of the snow occurring on the 24th. North winds gusted to 34 mph at Denver International Airport. As the storm moved east on the 24th and 25th… Blizzard conditions developed over northeastern Colorado closing both I-70 and I-76 east of Denver.

In 2010…a powerful spring snowstorm swept across northern Colorado. The heaviest snowfall occurred in and near the Front Range foothills and deep upslope developed. The heavy…wet snow clung to tree limbs and power lines…which caused 36500 electrical outages throughout Denver and the surrounding metro area. Power outages also occurred in Douglas and Elbert counties. In addition…approximately 5 thousand travelers were stranded at Denver International Airport due to flight cancellations and delays. Initially… The snow fell at a rate of 2 to 4 inches per hour…between Boulder and Denver…bringing the evening rush hour to a complete halt. Countless motorists were stuck on U.S. Highway 36 for several hours. Other road closures included I-70…from Idaho Springs to Genesee and I-25 in both directions…from Lincoln Avenue south to Greenland… Or about 15 miles south of Castle Rock. In and near the Front Range foothills and Palmer Ridge…storm totals included: 26 inches at Coal Creek Canyon…23.5 inches…3 miles south of Evergreen; 22 inches at Aspen Springs…13 miles northwest of Golden and 3 miles west of Jamestown; 21.5 inches…3 miles north of Blackhawk…20 inches at Genesee; 16 inches near Nederland; 14 inches near Elizabeth and Strontia Springs dam; 13 inches at Bergen Park and 3 miles southeast of Indian Hills; 12.5 inches… 3 miles southwest of Conifer; 11.5 inches at St. Mary’s glacier. In Denver and the surrounding suburbs…storm totals included: 15 inches at Lone Tree; 14 inches near Highlands Ranch; 13 inches near Louisville…12.5 inches at Aurora…Commerce City…Englewood and 5 miles west of Littleton; 12 inches at Erie and Greenwood Village; 11 inches at Ralston Reservoir and Westminster; 10.5 inches at the National Weather Service in Boulder…10 inches… 4 miles northeast of Castle Rock…Fredrick…Lakewood…3 miles southeast of Morrison and 4 miles southeast of Watkins; 9.5 inches…3 miles southeast of Denver; 9 inches in Broomfield…Lafayette…Northglenn and Thornton; 8.5 inches near Federal Heights; 8 inches in Arvada… Brighton and Wheat Ridge; 6 inches…5 miles southwest of Hudson. Officially…10.8 inches of snow was measured at Denver International Airport.

Continue reading March 23 to March 29: This Week in Denver Weather History

March 2025 top shots: Monthly photo slideshow

A gorgeous sunrise starts the day. (Lori Bollendonk)
A gorgeous sunrise starts the day. (Lori Bollendonk)

The month of March is the start of meteorological spring and while conditions do begin warming, winter weather is certainly out of the question.  From hot to cold, snow to rain, the conditions can be very conducive to great pictures as we see in our slideshow.

March in Denver typically means frequent and rapid weather changes. The days grow longer and we start enjoying more sunshine and sometimes summer-like weather. However, on occasion arctic air masses can still force their way south into Colorado dropping temperatures quickly and markedly.

With the active wildlife, increased outdoor activities by us humans, and of course the weather, March imagery contains a wide variety of subjects and extremes.

  • Slideshow updated March 17, 2025. To learn more about how to send your photo to us for inclusion in the slideshow, see below the slideshow.

Showcasing images captured by ThorntonWeather.com readers as well as some of our own, our monthly slideshow covers the entire gamut of weather-related imagery.

Sunsets, sunrises, wildlife and of course every type of weather condition are vividly depicted in images captured from yours and our cameras.

What is missing in the slideshow above?  Your photo!

Our monthly photo slideshow is going to feature images that we have taken but more importantly images that you have captured.  The photos can be of anything even remotely weather-related.

Landscapes, current conditions, wildlife, pets, kids.  Whimsical, newsy, artsy.  Taken at the zoo, some other area attraction, a local park, a national park or your backyard.  You name it, we want to see and share it!

Images can be taken in Thornton, Denver or anywhere across the extraordinary Centennial State.  We’ll even take some from out of state if we can tie it to Colorado somehow.

We’ll keep the criteria very open to interpretation with just about any image eligible to be shown in our slideshows.

What do you win for having your image in our slideshow?  We are just a ‘mom and pop’ outfit and make no money from our site so we really don’t have the means to provide prizes.  However you will have our undying gratitude and the satisfaction that your images are shared on the most popular website in Thornton.

To share you images with us and get them included in the slideshow just email them to us or share them with ThorntonWeather.com on any of the various social media outlets.  Links are provided below.

So come on, get those camera’s rolling!

March 16 to March 22: This Week in Denver Weather History

This Week in Denver Weather History

March is a month of warming temperatures but it also is Denver’s snowiest. Our look back at this week in weather history showcases some memorable snowstorms including the infamous March Snowstorm of 2003.

From the National Weather Service:

9-19

In 1906…an extended cold and blustery period occurred with light snow totaling 14.4 inches over 11 consecutive days. The greatest amount of snow on a single day was 4.0 inches on the 15th. Only a trace of snow fell on the 12th and 17th. High temperatures were below freezing for the entire period. The coldest were 14 degrees on the 16th and 18 degrees on the 17th. Both readings were record low maximums for the dates. Low temperatures were mostly in the single digits. The coldest were 2 degrees below zero on the 16th and 5 degrees below zero on the 19th. Northeast winds were sustained to 22 mph on the 9th. North winds were sustained to 36 mph on the 10th…32 mph on the 13th…and 22 mph on the 15th.

12-16

In 1880…a protracted cold spell resulted in 8 temperature records being set. Record low temperatures for the date were set when the temperature dipped to 10 degrees below zero on the 13th and 14th…8 degrees below zero on the 12th and 15th…and 4 degrees below zero on the 16th. Daily record low maximum temperatures were set with 11 degrees on the 12th…12 degrees on the 13th…and 19 degrees on the 15th.

14-16

In 1908…a warm spell resulted in daily record high minimum temperatures on 3 consecutive days: 54 degrees on the 14th…52 degrees on the 15th…and 56 degrees on the 16th… Also the all-time record high minimum for the month of March. High temperatures ranged from 65 degrees on the 14th to 72 degrees on the 16th.

In 1983…a heavy wet snowstorm buried metro Denver with the foothills receiving the most. Conifer recorded 34 inches of snow with 4 feet measured at Coal Creek Canyon in the foothills northwest of Denver. The storm left 6 to 10 inches of snow across metro Denver. Boulder received 12 to 18 inches. Flight operations at Stapleton International Airport were limited to one runway for a time. Some roads and schools were closed…and power outages occurred when wet snow downed lines. Snowfall on the 15th and 16th totaled 7.2 inches at Stapleton International Airport where north winds gusted to 30 mph. Maximum snow depth on the ground was only 6 inches due to melting.

15-16

In 2000…heavy upslope snowfall occurred in and near the Front Range foothills and over the palmer divide to the south of metro Denver. Snowfall totals from the storm included: 17 inches at Idaho Springs; 16 inches at Aspen Springs; 12 inches in Boulder; 11 inches at Bailey… Chief Hosa…Coal Creek Canyon…Eldorado Springs…Evergreen… And near Morrison; 10 inches at Intercanyon…Ken Caryl Ranch…and near Nederland; 9 inches near Sedalia and in Wheat Ridge; and 8 inches in Arvada. Snowfall totaled 5.4 inches at the site of the former Stapleton International Airport. Northeast winds gusted to 28 mph at Denver International Airport on the 15th.

16

In 1902…north winds were sustained to 40 mph with gusts to 48 mph.

In 1908…the low temperature dipped to only 56 degrees…the record high minimum for the month.

In 1963…high winds struck metro Denver causing heavy damage. Winds gusted at 90 to 100 mph in Boulder. Wind gusts to 98 mph were recorded at Jefferson County Airport in Broomfield where hangars and several light planes were severely damaged. Wind gusts to 87 mph were recorded southwest of Littleton. A west wind gust to 55 mph was recorded at Stapleton Airport. Trees were uprooted…signs blown down…and utility lines disrupted. Damage totaled nearly 5 thousand dollars in Boulder alone.

In 1987…a storm dropped 3 to 6 inches of snow across metro Denver with higher amounts in the foothills. Most of the snow on the plains melted as it fell. Only 1.9 inches of snow fell at Stapleton International Airport where southeast winds gusted to 30 mph.

In 2015…the temperature at Denver International Airport reached 81 degrees.  It broke the previous record of 75 degrees and also made it the earliest the 80 degree day on record.  The previous 80 degree day record was the 18th.

17

In 1966…high winds caused extensive minor damage across metro Denver. A light plane was overturned at Stapleton International Airport where northwest wind gusts to 55 mph were recorded. Winds gusted to 56 mph at Table Mesa in Boulder

In 1989…strong winds raked metro Denver. West wind gusts to 49 mph were clocked at Stapleton International Airport.

In 2003…the first tornado of the season was sighted near Strasburg. The small landspout touched down briefly…but caused no damage.

17-18

In 1923…4.2 inches of snow fell over downtown Denver. Northwest winds were sustained to 45 mph with gusts to 49 on the 17th. Low temperature of zero degrees on the 18th was the lowest of the month that year.

In 1944…heavy snow fell across metro Denver. The storm started as rain on the 17th…but soon turned to snow. Snowfall amounts totaled 8.5 inches in downtown Denver and 11.0 inches at Stapleton Airport. The highest wind recorded during the storm was 23 mph on the 17th.

In 1961…a major winter storm dumped 10.7 inches of snow at Stapleton Airport. Most of the snow…9.7 inches…fell on the 18th. Winds were light.

In 1994…strong winds buffeted metro Denver. West winds gusted to 51 mph at Stapleton International Airport on the 17th. Other significant wind gusts included 85 mph atop Squaw Mountain south of Idaho Springs…and 82 mph at Rollinsville southwest of Boulder…both on the 18th.

In 1996…a second storm in less than 3 days dumped heavy snow in the mountains and foothills again…but snowfall amounts across metro Denver ranged from only 2 to 4 inches. The heavy snowfall resulted in several traffic accidents along I-25 and I-70…south and west of Denver respectively. The major accidents involved at least 30 cars and resulted in several minor injuries. The accidents closed both highways for a time. Snowfall totals included 13 inches at Evergreen and 10 inches at Conifer. Snowfall totaled only 0.7 inch at the site of the former Stapleton International Airport. At Denver International Airport… North winds gusted to 28 mph on the 17th and 39 mph on the 18th.

In 2016…a combination of enhanced banding associated with a strong upper level jet stream…and low level upslope following the passage of a cold front…produced heavy snowfall in northern mountains as well as in and near the foothills of Boulder County. Storm totals included: 19.5 inches near Ward…16 inches near Allenspark…13.5 inches near Eldorado Springs; 13 inches at the National Weather Service Office in Boulder and 5 miles east of Boulder; 12.5 inches at Winter Park Ski Resort…12 inches at Eldora Ski Area; 11 inches…7 miles south of Lyons and at Rollinsville; 10.5 inches at Aspen Springs… and 9.5 inches near Blackhawk. In Denver and the surrounding suburbs…storm totals included: 8.5 inches in Broomfield…Lafayette and 5 miles northeast of Westminster; 7 inches near Northglenn…6.5 inches in Thornton and northwest Denver; with 6 inches at Firestone. At Denver International Airport…an official measurement of 4.7 inches of snow was observed.

Continue reading March 16 to March 22: This Week in Denver Weather History

A right way and a wrong way: Budget cuts to NOAA threaten lives

Your favorite weather app or weather website without NOAA and the NWS. (Justin Berk, Meteorologist)
Your favorite weather app or weather website without NOAA and the NWS. (Justin Berk, Meteorologist)

The new administration is set on making cuts to the federal government budget, but I am concerned that they are going about it rather haphazardly and in a way that endangers lives.

The National Oceanic and Atmospheric Administration (NOAA), the parent of the National Weather Service (NWS), is not to be spared from DOGE. Last week it came out that at least 800 workers were to be cut within NOAA, many from local NWS offices.

The cuts to the NWS are troubling as the agency was already known to be understaffed. Local NWS offices are absolutely critical to providing timely, life-saving information, particularly when severe weather strikes. Only the personnel in these local offices have the in-depth knowledge of their specific geographical locations to accurately understand the complicated weather patterns that impact them.

Here at Thornton Weather, we rely heavily on the NWS for the information we provide not only in terms of forecasts, but many of the features on our website. These cuts threaten all of that.

More troubling is the storm on the horizon with rumors about a privatization of many of the services the National Weather Service provides. AccuWeather and other for-profit organizations have long cast a wishful eye for this to happen to enhance their balance sheets.

Free forecasts? Gone. Free live radar? Gone. Life-saving weather alerts? Only if you pay. Much of the data on ThorntonWeather.com? Bye bye. That is what privatization would bring. To be blunt, lives will be lost as a result.

I am further concerned about cuts to other critical agencies, most notably the Department of Veterans Affairs and many of the agencies of the Department of the Interior like the National Park Service, U.S. Forest Service, Bureau of Land Management and the U.S. Fish and Wildlife Service.

Let me clear, there is no doubt that our federal government needs to be trimmed in terms of size and budget. The bureaucrats have lived high on the hog at our expense, ridiculous programs are funded and many agencies have become extraordinarily bloated. I am certain that even within those I mention, there are plenty of cuts that could be made with minimal pain.

However, the way this is happening is wrong. This is taking a chainsaw to something that needs a knife. Smart, directed cuts could have massive benefits, lower costs and result in a smaller, leaner, more efficient government.

We won’t get there with the approach the administration is taking now. What we will get is crucial agencies that service, help and protect American citizens destroyed and unable to perform the missions they have been charged with.

That is unsatisfactory.

If you concur, I would urge you to reach out to your federal elected representatives and let them know, in a respectful way, that this can be done better.

I never delve into politics on this page and while this is politics-related, I will be keeping it generic in nature and what is written here is no indication of my personal beliefs on politics and I don’t care about yours. Any replies should be respectful and on topic. Those that are not will be deleted.

Related:

February 2025 weather recap: Temps come in right at average, month is drier than normal

Thornton, Colorado's February 2025 Temperature Summary. (ThorntonWeather.com)
Thornton, Colorado’s February 2025 Temperature Summary. (ThorntonWeather.com)

The month of February might have seemed unusually cold and while we did see a very chilly middle of the month, it was bookended by a warm start and finish. Also, while we received a good bit of snow, it was relatively dry giving little measurable precipitation.

The month started out with above normal temperatures dominating six of the first seven days of the month. Things then turned toward the colder side for the next two weeks with below average temperatures on all but one day during the period. We then saw things turn warmer and Mother Nature gave us a hint of spring.

We only saw four days with snowfall, none of which were significant events. All of them were relatively ‘dry snow’ and didn’t do much in terms of liquid precipitation. The greatest snowfall came out the 15th of the month with 3.9 inches.

Overall, Thornton’s average temperature came in at 31.8 degrees. That is right at the running 18-year average for the month.

Our warmest temperature reading of 69.7 degrees came on the 25th of the month. Our coldest, -1 degrees, was recorded on the morning of the 19th.

Out at Denver International Airport where the Mile High City’s official records are kept, it was slightly colder. The site saw an average temperature for the month of 31.2 degrees. This was well below their long-term average for February of 32.7 degrees.

Precipitation for the month was rather meager, despite the snow we received. Thornton saw a mere 0.10 inches in its bucket. This was well below the running average for February of 0.64 inches. It also put February 2025 into the books as the second driest February of the past 18 years.

At DIA, Denver fared better with 0.22 inches recorded. This was just more than half of the long-term February average for the Mile High City of 0.41 inches.

In terms of snowfall, Thornton recorded 6.3 inches. That is a respectable amount but well below our February average of 11.3 inches.

DIA saw less snow than us with 5.5 inches recorded. This was a good bit below their long-term February average of 7.6 inches.

Click here to view Thornton’s complete February 2025 climate summary report.

Thornton, Colorado's February 2025 Precipitation Summary. (ThorntonWeather.com)
Thornton, Colorado’s February 2025 Precipitation Summary. (ThorntonWeather.com)

March 9 to March 15: This Week in Denver Weather History

This Week in Denver Weather History

Blizzards, heavy snow and damaging wind are the three main types of events that dominate our look back at this week in Denver weather history.

From the National Weather Service:

8-9

In 1992…a major blizzard struck metro Denver. The storm was preceded by thunderstorms with small hail during the afternoon of the 8th. By evening…with the passage of a strong arctic cold front…snow began falling. Strong north to northeast winds at 30 to 40 mph with gusts to 52 mph produced near zero visibilities in blizzard conditions across metro Denver. By the morning of the 9th…snowfall amounts up to a foot and a half were reported with drifts of 2 to 4 feet. Many roads were closed including I-70 east of Denver and I-25 both north and south of Denver. Many homes and stores were temporarily without power. Snowfall amounts included: 18 inches at Conifer…13 inches in Boulder and Denver…12 inches at Brighton and Morrison…and 10 inches at Aurora. Snowfall totaled 12.4 inches at Stapleton International Airport where north winds gusting as high as 52 mph reduced the visibility to zero at times in heavy snow and blowing snow.

In 2002…high winds occurred in the foothills west of Denver. Winds gusted to 95 mph near Fritz Peak and to 73 mph near Nederland.

8-10

In 1989…unusually warm weather set four daily temperature records in Denver. The high temperature of 74 degrees on the 8th exceeded the record. Records were equaled on the 9th with a high of 77 degrees and the 10th with a high of 79 degrees. The low temperature of 42 degrees on the 10th set a new record high minimum for the date.

9

In 1918…northwest winds sustained to 44 mph with gusts as high as 52 mph occurred during the early morning hours.

In 1960…west-northwest winds gusted to 51 mph at Stapleton Airport.

In 1980…high winds were recorded in the foothills with a wind gust to 84 mph at Wondervu. Northwest winds gusted to 38 mph at Stapleton International Airport.

In 1982…strong Chinook winds buffeted the foothills in Boulder. Wind gusts of 60 to 90 mph toppled a microwave dish antenna and blew the shell off a camper. West winds gusted to 47 mph at Stapleton International Airport.

In 1986…high winds in the foothills with gusts of 60 to 70 mph were reported at Golden Gate Canyon and in Boulder. Northwest winds gusted to 35 mph at Stapleton International Airport.

9-10

In 1904…strong Chinook winds raked the city for 2 days. On the 9th…west winds sustained to 53 mph with gusts to 62 mph warmed the temperature to a high of 55 degrees. On the 10th…west winds were sustained to 48 mph with gusts to 54 mph. The high temperature was 58 degrees.

In 2013…a storm system brought heavy snow to areas in and near the Front Range mountains and foothills where storm totals included: 13 inches at Berthoud Pass SNOTEL…12 inches at Arapahoe ridge; 11 inches…5 miles southwest of Golden; 10.5 inches near Kittridge; 10 inches at Lake Eldora and Pine Junction; 9.5 inches near Conifer…9 inches…near Bailey and 9 miles east-northeast of Nederland…Joe Wright and Strontia Springs. Along the urban corridor…some storm totals included: 8.5 inches at Highlands Ranch and near Morrison; 8 inches in Arvada; 7 inches…5 miles northeast of Westminster; 6.5 inches at Centennial…lone tree and Wheat Ridge; 6 inches in west Denver…Hygiene…Lyons and Thornton…5.5 inches in Broomfield; with 5 inches in Aurora and the former Stapleton International Airport. Across the Palmer Divide and northeast plains of Colorado…storm totals ranged anywhere from 2 to 10 inches. The combination of snow and strong wind produced blizzard conditions and forced the closure of interstate 70 east of Denver. Sustained winds of 25 to 35 mph with gusts to 45 mph produced near zero visibilities at times and snowpacked roads. Snowdrifts from 2 to 4 feet deep were reported. As a result…many of the roadways became impassable. Officially…Denver international recorded 5.4 inches of snowfall on the 9th. In addition…a peak wind gust to 38 mph was observed from the north.

9-11

In 1927…rain changed to heavy snow behind a cold front and totaled 7.7 inches over downtown Denver. North winds were sustained to 37 mph with an extreme velocity to 38 mph on the 11th.

In 1955…a strong windstorm raked the eastern foothills. A wind gust to 95 mph was recorded at Rocky Flats with a gust to 60 mph measured at Valmont. Damage in Boulder totaled 10 thousand dollars. Minor injuries also occurred. The strong winds were associated with a vigorous cold front that produced northwest winds at 40 mph with gusts as high as 52 mph at Stapleton Airport where the visibility was briefly reduced to 3/4 mile in blowing dust on the 10th.

In 1968…5.5 inches of snow fell at Stapleton International Airport where northeast winds gusted to 24 mph on the 10th.

Continue reading March 9 to March 15: This Week in Denver Weather History

Time to ‘spring forward’ as Daylight Saving Time begins March 8

Daylight Saving Time
The United States returns to Daylight Saving Time at 2:00am Sunday as Standard Time comes to an end.

The biannual ritual of changing our clocks to adjust for Daylight Saving Time occurs this Saturday night providing yet another signal of the changing of seasons.  The United States will ‘spring forward’ one hour at 2:00am Sunday morning as we begin Daylight Saving Time.

The ritual of changing our clocks twice a year can be met with some resistance as some people struggle to adjust their body’s internal clock.  The start of Daylight Saving Time can be particularly problematic given the one hour less sleep people receive on the night of the change.

However, longer days as we head into the milder months are a very real benefit and for many worth the inconvenience of a lost hour of sleep.  The time change definitely has big effects on how much daylight we enjoy during our normal waking hours.

On Saturday, prior to the change, sunset will occur at 5:59pm but on Sunday the sun won’t disappear over the horizon until 7:01pm.  This affords folks more time in the evening to get started on those spring-time chores and allows us to get outside and enjoy the warming weather.

Similarly, sunrise on Saturday is at 6:21am but shifts to 7:20am on Sunday.

The March Equinox is also on the horizon.  Spring officially begins at 3:01am on Thursday, March 20.

This year Daylight Savings Time will come to an end on November 2.

Some of the recent history of Daylight Savings Time (from Wikipedia):

Daylight saving time in the United States was first observed in 1918. Most areas of the United States currently observe daylight saving time, with the exceptions being the states of Arizona and Hawaii along with the territories of Puerto Rico, American Samoa, Guam, and the Northern Mariana Islands.

From 1987 to 2006, daylight saving time in the United States began on the first Sunday of April and ended on the last Sunday of October. The time was adjusted at 2:00 AM (0200) local time (as it still is done now).

Since 2007, daylight saving time starts on the second Sunday of March and ends on the first Sunday of November, with all time changes taking place at 2:00 AM (0200) local time.

Daylight Savings Time Schedule

Year DST Begins 2 a.m.
(Second Sunday in March)
DST Ends 2 a.m.
(First Sunday in November)
2025 9 March 2025 2 November 2025
2026 8 March 2026 1 November 2026
2027 14 March 2027 7 November 2027
2028 12 March 2028 5 November 2028
2029 11 March 2029 4 November 2029

Thornton’s March 2025 preview: Temps warm considerably but snow is often abundant

The month of March in Denver is usually one that is welcomed heartily by residents. We begin to shake off the cold of winter with warmer temperatures and calmer conditions. That does not mean we are done with snow and cold by any means.

March usually offers healthy snowfall giving us an opportunity to add to our seasonal totals.  While there is good snow potential in March, the month also typically brings much warmer temperatures.

March is historically Denver’s snowiest month and brings about 20% of our annual snowfall.  Heavy, wet spring snow storms can oftentimes bring the entire month’s snowfall total in one monstrous snow.

We also start the transition to spring and severe weather season and the month typically brings our first thunderstorms of the year.  Temperatures climb throughout the month and by the end our average daytime highs are near 60 degrees.

For a complete look at what lies ahead in March 2025, click here.

March 2 to March 8: This Week in Denver Weather History

This Week in Denver Weather History
While March begins the spring warm-up in earnest, winter is usually not done with Denver. The month in fact is our snowiest of the season oftentimes bringing our biggest storms. Our look back at this week in history showcases this fact with many notable, large snowstorms.

From the National Weather Service:

1-2

In 1969…heavy snowfall totaled 7.0 inches at Stapleton International Airport where north-northwest winds gusted to 18 mph.

In 1988…3 to 6 inches of snow fell over metro Denver. Snowfall totaled 3.2 inches at Stapleton International Airport where north winds gusted to 32 mph.

In 2003…localized heavy snow developed in the foothills of Jefferson County. Storm totals included: 12.5 inches near Conifer…11 inches in the foothills southwest of Boulder…and 10 inches near Genesee. Only 0.9 inch of snow fell at the site of the former Stapleton International Airport.

2

In 1904…west winds sustained to 52 mph with gusts to 60 mph warmed the temperature to a high of 68 degrees. Snowfall was 0.4 inch in the evening.

In 2008…a storm system brought heavy snow to portions of the Front Range foothills; as well as localized blizzard conditions to areas along the palmer divide. In the foothills of Jefferson and park counties storm totals included: 16 inches at Genesee…14 inches…4 miles south of Evergreen; 13 inches…3 miles southeast of Pinecliffe; 12 inches…5 miles west-southwest of Conifer; 10 inches at Evergreen and 5 miles west of Littleton. Along the palmer divide…south and southeast of Denver… The combination of gusty northerly winds and snow caused localized blizzards. Storm totals included: 7 inches… 2 miles east of Castle Rock; 6 inches…4 miles east of Parker and 2 miles northwest of Elizabeth; and 5 inches near castle pines. The wind…gusting to 35 mph…stirred up snow drifts from 1 to 3 feet in depth. Northeast winds gusted up to 49 mph at Denver International Airport; and 2.0 inches of snow was observed at the former Stapleton International Airport.

2-3

In 1901…strong northwest winds raked the city for 2 days. On the 2nd…winds were sustained to 55 mph with gusts to 62 mph. The Chinook winds warmed the temperature to a high of 72 degrees…a record maximum for the date. On the 3rd…winds were sustained to 61 mph with gusts as high as 65 mph. The high temperature was 59 degrees.

In 1964…heavy snowfall of 6.3 inches was measured at Stapleton International Airport. East winds gusted to only 20 mph behind a cold front.

In 1978…5.0 inches of snowfall were measured at Stapleton International Airport where northeast winds gusted to 24 mph on the 2nd. The passage of a cold Canadian front kept temperatures only in the teens and 20’s on the 2nd after a high temperature of 33 degrees shortly after midnight. The temperature…after a morning low of 3 degrees below zero…climbed to only 14 degrees on the 3rd…setting a record low maximum for the date.

2-4

In 1963…heavy wet snow was accompanied by strong gusty winds across metro Denver. Snowfall totaled 11.6 inches at Stapleton Airport where north winds gusting to 44 mph caused much blowing and drifting snow. Hazardous driving conditions resulted in many traffic accidents.

In 1976…snowfall totaled 8.0 inches at Stapleton International Airport where…on the 4th…northeast winds gusted to 31 mph reducing the visibility to as low as 1/4 mile. Maximum snow depth on the ground was 7 inches. Nine inches of snow were measured in Boulder.

3

In 1875…six inches of snow fell in Georgetown.

In 1895…northwest bora winds were sustained to 45 mph with gusts to 58 mph in the city.

In 1966…cold northwest wind gusts of 50 to 90 mph occurred across metro Denver. Both cars and trucks were blown off an icy highway just east of Denver where some highways were closed by either blowing dust or blowing snow. A northwest wind gust to 43 mph was recorded at Stapleton International Airport. The strong winds caused limited minor damage.

In 1972…winds gusted to 55 mph in Boulder causing no reported damage. West winds gusted to 49 mph at Stapleton International Airport.

In 1985…snow struck metro Denver. Heaviest hit was Boulder where 6 to 8 inches were measured. Icy roads caused the closure of I-25 north and south of Denver due to traffic accidents. The snow also caused long delays at Stapleton International Airport where snowfall totaled only 2.6 inches.

In 1997…west winds gusted to 52 mph at Denver International Airport.

3-4

In 1932…a dust storm occurred on the 3rd during the late afternoon. North winds gusting as high as 38 mph behind a cold front kicked up much blowing dust. Light snow developed during the evening and continued through the early morning of the 4th. Snowfall totaled 2.7 inches.

In 1934…strong winds raked Boulder. A wind gust to 62 mph was recorded at Valmont just east of Boulder. The strong winds caused hundreds of dollars of damage in Boulder.

In 1981…the most vigorous snow storm of the season struck the state…closing many schools and most highways connecting Denver…Colorado Springs…and Limon. North winds gusting to 43 mph whipped nearly 10 inches of snow in Denver into 3-foot drifts and snarled traffic on the morning of the 4th. Snowfall totaled 9.8 inches at Stapleton International Airport.

In 1989…a storm dumped 2 to 6 inches of snow across metro Denver. The snow caused 2-hour air traffic delays at Stapleton International Airport where 3.0 inches of snow fell and north winds gusted to 23 mph on the 3rd. There were many traffic accidents across metro Denver. I-70 was closed east of Denver for a time on the 3rd.

In 1991…high winds raked the eastern foothills. Wind gusts of 60 to 90 mph were common with 119 mph recorded at Wondervu southwest of Boulder…106 mph on Shanahan Ridge and 92 mph at Table Mesa…both in southwest Boulder. Several trees were uprooted and traffic signs and lights blown over. Flying debris caused damage to homes… Buildings…and cars. In Boulder…a stop sign was blown onto a car. There were no reports of injuries. Southwest winds gusting as high as 48 mph briefly reduced the prevailing visibility to as low as 1/16th mile in blowing dust at Stapleton International Airport on the 4th.

Continue reading March 2 to March 8: This Week in Denver Weather History