Our look back at this week in Denver weather history contains much of what you would expect to see this time of year – high winds, snow storms, and cold but also a rare February thunderstorm.
From the National Weather Service:

21-22

In 1909…a major storm dumped 12.9 inches of heavy snowfall over the city. North winds were sustained to 37 mph on the 22nd. Temperatures during the storm hovered in the 20’s.

22

In 1893…northwest winds were sustained to 36 mph with gusts to 50 mph.

In 1900…northwest winds sustained to 40 mph with gusts to 45 mph warmed the temperature to a high of 61 degrees.

In 1910…a cold front caused a remarkably sharp drop in temperature from 43 degrees at 3:00 am to only 3 degrees at 8:30 am. These were the high and low temperatures for the day. Early west winds switched to northeast behind the front.

In 1927…west winds were sustained to 42 mph with a measured maximum velocity to 60 mph.

In 1954…strong and gusty west winds persisted throughout the day. The highest wind gust recorded at Stapleton Airport was 58 mph.

In 1960…snowfall totaled 5.9 inches…producing near-blizzard conditions in snow and blowing snow at Stapleton Airport where northeast wind gusts to 40 mph reduced visibility to 1/2 mile.

In 1986…high winds occurred in the foothills. Wind gusts of 65 to 70 mph were reported at Golden Gate Canyon…and a peak gust of 83 mph was recorded at Echo Lake. Northwest winds gusted to only 29 mph at Stapleton International Airport.

In 1988…a wind gust to 83 mph was recorded in Boulder with 80 mph clocked at Rollinsville. Northwest winds gusted to 45 mph at Stapleton International Airport.

In 1996…wind gusts to 63 mph were reported in western Elbert County. Southwest winds gusted to 45 mph at Denver International Airport.

In 1999…strong post-frontal…bora winds developed over the foothills and spread over the northeast plains. Peak wind gusts included: 87 mph at Golden Gate Canyon; 84 mph at Wondervu; 80 mph at the National Center for Atmospheric Research mesa lab; 75 mph at the Rocky Flats Environmental Test Facility; 74 mph at Jefferson County Airport near Broomfield; 72 mph at the Gamow Tower on the University of Colorado campus in Boulder; and 60 mph at Bennett. West to northwest winds gusted to 44 mph at Denver International Airport.

In 2000…thunder was heard across much of metro Denver. Thunderstorms over southwest metro Denver produced 1/4 to 1/2 inch diameter hail at Pinehurst Country Club. A thunderstorm at Denver International Airport produced wind gusts to 34 mph. This was only the 6th time since 1891 that thunder had been reported in February.

22-23

In 1985…a snowstorm struck the eastern foothills with 8 to 15 inches of new snow. Three to 7 inches of new snow fell across metro Denver and parts of I-70 were closed at times. Snowfall totaled only 3.3 inches at Stapleton International Airport where northeast wind gusts to 29 mph were recorded.

In 1992…a snow storm dumped heavy snow in the Front Range foothills. Conifer received 12 inches of new snow with 7.5 inches at Aspen Springs. Snow only dusted the plains and metro Denver…but winds were strong with a gust to 43 mph from the north at Stapleton International Airport where snowfall totaled only 0.3 inch. This was the only measurable snowfall of the month…equaling the record for the least snowiest February first set in 1970. Rare thunder for February accompanied the snow during the early morning hours of the 23rd.

In 1999…strong Chinook winds developed on a very localized scale overnight in and near the foothills of northern Jefferson and southern Boulder counties. Peak wind reports included: 82 mph at the Rocky Flats Environmental Test Facility…80 mph at the National Center for Atmospheric Research mesa lab in Boulder…77 mph near Nederland…and 75 mph atop the Gamow Tower on the University of Colorado campus in Boulder.

In 2012…a strong upper level jet stream produced high winds along the Front Range. In Boulder…the strong winds snapped power poles and toppled trees. As a result…about 7 thousand Xcel Energy customers were without power for several hours. The high winds overturned a tractor-trailer on foothills highway overpass…north of Valmont road. The driver suffered minor injuries. A parked car was totaled when it was crushed by a fallen tree near the university of Boulder. The strong winds were also responsible for two Boulder County wildfires which consumed a total of 65 acres. Colorado Department of Transportation officials closed U.S. 36 at McCaslin Boulevard in both directions after the wind caused damage to the pedestrian overpass. Metal siding from the overpass fell into highway; fortunately there were no injuries. In total…electrical outages affected 46 thousand customers along the Front Range. Damage to roofs…siding… Garage doors and fences was also reported. Peak wind gusts included: 93 mph near Lyons; 88 mph at NCAR Mesa Lab; 85 mph…2 miles southwest of Rocky Flats; 82 mph…5 miles northwest of Boulder; 81 mph…2 miles north of Longmont…4 miles east-northeast of Nederland…the National Wind Technology Center and near Wondervu; 80 mph at the junction of highways 72 and 93; 79 mph at the Boulder Municipal Airport; 78 mph…6 miles northwest of Boulder; 77 mph at Rocky Mountain Municipal Airport; 76 mph atop Berthoud Pass; 75 mph near Aspen Springs; 70 mph at Longmont Municipal Airport; 64 mph at Erie Municipal Airport. At Denver International Airport…peak wind gusts of 53 mph on the 22nd and 55 mph on the 23rd were observed.

22-29

In 1960…heavy snowfall of 6.1 inches at Stapleton Airport on the 22nd and 23rd marked the beginning of a protracted cold spell which lasted until the end of the month. The cloudy… Cold weather was accompanied by occasional light snow or flurries and fog. New record low temperatures for the dates were set on the 24th thru the 29th with the lowest temperature of 11 degrees below zero on the 28th. The seven consecutive days of low temperatures of zero or below had been exceeded in duration only 4 times previously. New low maximum temperatures for the dates were set on the 23rd… 24th…and the 26th thru the 29th with the lowest maximum temperature of 8 degrees recorded on the 26th.

23

In 1904…west winds sustained to 42 mph with gusts as high as 60 mph warmed the temperature to a high of 63 degrees.

In 1907…a thunderstorm…relatively rare in February…was observed over the city. The chance of occurrence is around once every ten years.

In 1977…while 60 to 100 mph winds produced a huge dust storm over much of eastern Colorado…only an experimental windmill at the Rocky Flats nuclear plant was destroyed in the Denver area. Winds at Rocky Flats were clocked to 90 mph. Northwest winds gusted to 46 mph at Stapleton International Airport.

In 1986…wind gusts to 79 mph were clocked at Echo Lake in the foothills west of Denver.

In 1992…a rare February thunderstorm occurred. This was only the 5th time since 1891 that thunder has been heard in February.

In 1994…periodic high winds occurred over the higher elevations of the Front Range eastern foothills. The strongest wind gusts reached 87 mph atop Squaw Mountain near Idaho Springs. Southwest winds gusted to only 25 mph at Stapleton International Airport.

In 1996…high winds gusting as high as 76 mph were reported along the Front Range foothills and adjacent urban corridor. Wind gusts to 70 mph were reported atop Table Mesa near Boulder and to 63 mph in Broomfield. West winds gusted to 38 mph at Denver International Airport.

In 2012…bands of moderate to heavy snow…associated with a strong upper level jet…formed over the southern Front Range foothills…Palmer Divide and southern Denver suburbs. Storm totals included: 10 inches…2 miles west-northwest of Highlands Ranch and Kiowa; 9.5 inches near Castle Rock and Littleton; 8 inches at Aspen Springs and Marston Reservoir; 7.5 inches at Evergreen and Louviers; 7 inches…5 miles south-southwest of Arapahoe Park; with 4 to 6 inches elsewhere. Officially…Denver International Airport observed 1.9 inches of snowfall.

23-24

In 1935…northwest winds sustained to 37 mph with gusts as high as 47 mph produced considerable blowing dust behind a cold front on the 23rd. The dust was dampened by 7.0 inches of snowfall over downtown Denver from the late evening of the 23rd through the evening of the 24th.

In 1997…heavy snow fell in the foothills. Snowfall totals included 8 inches at sunshine canyon northwest of Boulder… And 6 inches at Morrison. Snowfall totaled only 2.4 inches at the site of the former Stapleton International Airport. East winds gusted to only 22 mph at Denver International Airport on the 23rd.

23-25

In 1912…a severe winter storm dumped 14.2 inches of snowfall over downtown Denver. Snow fell continuously from 9:40 am on the 23rd until 9:15 pm on the 25th with most of the snow… 9.2 inches…on the 24th. Temperatures were mostly in the 20’s. Northeast winds were sustained to 20 mph on the 24th.

Continue reading February 22 to February 28: This week in Denver weather history →

Wind, wind and more wind. Sounding like a broken record, we see that mentioned many times in our look back at this week in Denver weather history. There is of course other common weather conditions for this time of year including blizzards and arctic cold.

From the National Weather Service:

14-15

In 1960…heavy snowfall totaled 6.1 inches at Stapleton Airport.

In 1965…5.4 inches of snow fell at Stapleton International Airport behind a cold front. North-northeast winds gusted to 32 mph. Winds were strong and gusty all day and caused considerable blowing snow…contributing to hazardous driving conditions mainly to the east of Denver.

In 1984…a snow and wind storm howled across eastern Colorado closing I-70 east of Denver. This was the second blizzard in less than 4 days. Only 0.5 inch of new snow fell at Stapleton International Airport…but north winds gusted to 51 mph.

15

In 1881…the temperature plunged to a low of 20 degrees below zero in the city. In outer areas of the city…the temperature dipped to 26.5 degrees below zero.

In 1910…west winds were sustained to 42 mph.

In 1986…high winds battered the Front Range foothills. A wind gust to 95 mph was recorded in Boulder…but winds of 60 to 80 mph were common in and near the foothills. In Aurora…an automobile dealership lost a large plate glass window. Southwest wind gusts to 44 mph were recorded at Stapleton International Airport. The strong winds warmed temperatures. A record maximum temperature of 66 degrees and a record high minimum temperature of 37 degrees were recorded at Stapleton International Airport.

In 1988…winds to 75 mph were clocked in Boulder…while a west wind gust to only 41 mph was recorded at Stapleton International Airport.

In 1997…winds gusted to 75 mph at Golden Gate Canyon during the early morning hours. West winds gusted to 31 mph at Denver International Airport.

In 2000…high winds spread from the foothills onto the plains. While the strongest winds were north and northeast of metro Denver…west winds gusted to 58 mph in Thornton and to 54 mph at Denver International Airport.

In 2005…light precipitation of only 0.02 inch at Denver International Airport and 0.5 inch was the only measurable snowfall of the month. This ranked the month as the 2nd driest February of record.

15-16

In 1889…heavy snowfall totaled 6.7 inches in downtown Denver. Most of the snow…5.5 inches…fell on the 15th when northeast winds were sustained to 18 mph.

In 1921…strong bora winds cooled maximum temperatures from the 60’s on the previous 3 days to 54 degrees on the 15th and to 43 degrees on the 16th. West winds were sustained to 39 mph with gusts to 54 mph on the 15th and to 46 mph with gusts to 56 mph on the 16th.

In 1953…strong…cold northwest winds were widespread from the foothills across the plains. Near gale force winds were observed in Boulder. A wind gust to 54 mph was recorded at Stapleton Airport where blowing dust briefly reduced the visibility to 1 1/2 miles. Damage was minor.

In 1993…an arctic cold front pushed south over the eastern Colorado plains with upslope snow developing behind the front. Snowfall amounts of 3 to 6 inches were common over metro Denver. At Stapleton International Airport…snowfall totaled 4.5 inches and north winds gusted to 25 mph. Temperatures hovered only in the single digits for most of the day. The storm produced up to a foot of snow over southeast Colorado.

In 2006…overnight snowfall in the mountains and eastern foothills contained a lot of red dust and dirt apparently from Arizona. Strong southwest winds with gusts to 100 mph in the San Juan Mountains on the 15th created widespread blowing dust. This red dust became entrained in snowfall across the area. The reddish colored snow was reported in Ward…Nederland…Blackhawk…and Boulder. The storm produced only 0.9 inch of snowfall in the Stapleton area of Denver with 4 to 5 inches measured in the foothills.

15-17

In 1938…a cold air mass brought a light snowfall of 6.2 inches over 3 days to downtown Denver where northeast winds were sustained to 18 mph on the 15th.

16

In 1879…a sudden burst of 3 inches of snow in less than 90 minutes stopped the street cars in downtown Denver during the late afternoon. Melted snow resulted in 0.16 inch of precipitation. Small soft hail also fell when the snow began. A gentleman caught on the prairie between Denver and Morrison described the event as the most severe storm of the winter while it lasted.

In 1885…a windstorm caused severe damage in the city. The strong winds blew all afternoon and most of the evening. West winds were sustained to 62 mph. The strong winds blew down signs and broke windows. Buggies and vehicles of all kinds were blown over. Smokestacks and chimneys were toppled. Roofs were blown off. The Denver and Rio Grande railroad car shop was partially unroofed and had a wall blown down. Three railroad cars were blown off the track. Many fences were damaged.

In 1897…west winds were sustained to 46 mph with gusts to 56 mph.

In 1912…northwest winds were sustained to 44 mph with a measured extreme velocity to 45 mph.

In 1921…west winds were sustained to 46 mph.

In 1972…wind gusts to 58 mph were recorded at the National Bureau of Standards in Boulder. In downtown Boulder…a wind gust to 51 mph was measured. Northwest winds gusted to 41 mph at Stapleton International Airport.

In 1988…snowfall totaled 3 to 6 inches across metro Denver… But 9 inches were measured in both Wheat Ridge and Evergreen. At Stapleton International Airport…3.4 inches of snow fell and northeast winds gusted to 26 mph. The strong winds blew a scaffold against a hotel in downtown Denver…breaking three windows.

In 1995…high winds occurred in the foothills behind a departing winter storm. A wind gust to 91 mph was recorded at Rollinsville with a gust to 82 mph atop Squaw Mountain west of Denver. West winds gusted to only 20 mph at Stapleton International Airport.

16-17

In 1929…strong west winds gusting to 84 mph raked Boulder and Lafayette. Limited minor damage and a few injuries occurred.

In 1986…strong Chinook winds continued to howl in the foothills. A wind gust to 89 mph was recorded at Table Mesa in Boulder on the 16th. Winds of 60 to 75 mph were clocked at other locations in Boulder on both days. A west wind gust to 51 mph was recorded at Stapleton International Airport on the 16th.

16-18

In 1970…a wind gust to 90 mph was recorded in Boulder at the National Center for Atmospheric Research. In downtown Boulder…sustained winds of 30 to 40 mph with gusts to 53 mph were measured. Damage was minor. West winds gusted to 45 mph at Stapleton International Airport on the 17th. The strong Chinook winds warmed the temperature to 70 degrees on the 16th and to 72 degrees on the 17th…both records for the date. The low temperature dipped to only 32 degrees on the 16th equaling the record high minimum for the date.

Continue reading February 15 to February 21: This week in Denver weather history →

Our look back at this week in Denver weather history contains many of the severe weather conditions we would expect to see – high speed winds, arctic cold, big time snowstorms, etc. Most notable is the coldest February temperature ever recorded – 25 degrees below zero.

From the National Weather Service:

31-8

In 1963…warm weather that began with the strong Chinook winds on the 31st and 1st continued through the 8th. Maximum temperatures through the period ranged from 52 degrees on the 2nd to 76 degrees on the 5th…which was a new record high for that date.

31-12

In 1899…a protracted cold spell lasted almost two weeks. Low temperatures plunged below zero on all days but February 9th with a reading of 6 degrees. The coldest low temperature of 22 degrees below zero on February 6th was a record low for the date. Low temperatures of 20 degrees below zero occurred on both February 11th and 12th… But only the 11th remains as the record minimum for the date. High temperature of only 5 degrees below zero on February 11th was a record low maximum for the date. High temperatures climbed to only zero degrees on both February 2nd and 3rd…but were not records. Intermittent light snow or flurries fell during the period. The most snowfall…2.0 inches…occurred on February 2nd.

1-9

In 1883…a protracted cold period occurred when low temperatures dipped below zero for 9 consecutive days. Low temperatures ranged from 22 degrees below zero on the 4th to 2 degrees below zero on the 1st and 6th. High temperatures ranged from 10 below zero on the 3rd to 23 on the 9th. Several temperature records were set that still stand today. Record lows of 18 below and 22 below zero occurred on the 3rd and 4th. Record low maximum readings of 2 below and 10 below zero occurred on the 2nd and 3rd. The high of only 10 below zero on the 3rd is the coldest maximum temperature ever recorded in Denver.

5-11

In 1978…the 5th marked the start of a record 7 consecutive days of dense fog at Stapleton International Airport. The heavy fog reduced the visibility to 1/4 mile or less for a period of time on each of these days. Light snow and/or freezing drizzle occurred on most days. Fog reducing visibility to less than 7 miles was recorded at Stapleton International Airport on 11 consecutive days through the 15th. During the period 5-14…the cold thick fog deposited heavy rime ice up to 5 inches thick on power lines and poles over a wide area of eastern Colorado…causing a major electrical power outage disaster.

6-10

In 1933…3:00 pm on the 6th marked the start of a protracted cold period through 8:00 am on the 10th when the temperature was below zero for 86 out of 88 hours. The cold period was interrupted on the 8th at 9:00 am when the temperature was 1 degree above zero and at 10:00 am when the temperature was 8 degrees above zero. Four temperature records were set. High temperatures of 4 degrees below zero on the 7th…8 degrees on the 8th…and 5 degrees below zero on the 9th were record low maximums for those dates. The only record low temperature record was 14 degrees below zero on the 10th. The lowest temperature reached during the period was 16 degrees below zero on both the 7th and 8th…which were not records.

7-8

In 1936…a sharp blast of frigid arctic air was of short duration. At 11:00 am on the 7th the temperature was 39 degrees…but dropped to only 1 degree within an hour. A more gradual decrease occurred through the night to a low temperature of 25 degrees below zero shortly after 6:00 am on the 8th. This was the lowest temperature ever recorded in February. (the record was equaled on February 1…1951.) Snowfall of 1.0 inch occurred in the cold air. During the day on the 8th…northwest Chinook winds from 12 to 16 mph…and as high as 21 mph warmed the temperature to a high of 35 degrees at 7:00 pm. This was a rise in temperature of 60 degrees in 13 hours. Unofficially…the temperature dipped to a low of 30 degrees below zero at Denver municipal airport on the morning of the 8th.

In 1956…5.5 inches of snow fell at Stapleton Airport where east-northeast winds gusted to 23 mph on the 7th.

In 1980…an upslope storm dumped 4 to 10 inches of snow over the plains and as much as 22 inches in the foothills. Traffic was snarled and some schools were closed. Two runways were closed for 3 hours at Stapleton International Airport…where snowfall totaled 6.5 inches and north winds gusted to 25 mph. Most of the snow fell on the 7th.

8

In 1886…northwest winds were sustained to 40 mph in the city. The strong winds were accompanied by a cold wave.

In 1905…west winds were sustained to 40 mph behind a cold front. The bora winds warmed the temperature to a high of only 38 degrees and produced a trace of snow.

In 1939…the very light snowfall…which began during the morning…contained unusually symmetrical…flat and dry snow crystals. These snow crystals continued to fall all afternoon. Snowfall was only a trace. Temperatures ranged from a low of 7 degrees to a high of 18 degrees.

In 1942…a major storm dumped 8.0 inches of heavy snow on downtown Denver. North winds were sustained to 17 mph.

In 1981…high winds occurred over the eastern foothills with 72 mph reported atop Squaw Mountain west of Denver and 60 to 70 mph winds at other locations in the foothills west of Denver. Wind gusts to 50 mph were reported in Boulder. Northwest winds gusted to 39 mph at Stapleton International Airport.

8-9

In 1898…rain changed rapidly to snow during the late evening of the 8th and continued through the early afternoon of the 9th. Snowfall totaled 6.0 inches in the city. Northeast winds were sustained to 26 mph with gusts to 30 mph on the 8th.

In 2001…heavy snow fell across metro Denver mainly in and near the eastern foothills. Snow totals included: 12 inches atop Crow Hill and near Evergreen; 10 inches in Evergreen and near Morrison; 9 inches at Genesee; 8 inches atop Lookout Mountain and near Littleton and Bailey; 6 inches at Arvada and Ken Caryl Ranch; and 5 inches in Broomfield…Chief Hosa… And Thornton. Snowfall totaled 5.1 inches at the site of the former Stapleton International Airport. Temperatures dipped to 15 degrees below zero at Denver International Airport on the morning of the 9th…setting a new record minimum for the date.

In 2002…high winds in the foothills on the 8th spread over the plains on the 9th and caused much blowing dust and snow and blizzard conditions east and northeast of metro Denver. I-70 was closed from just east of Denver to the Kansas state line. Zero visibilities coupled with snowpacked and slick roads caused multiple car accidents in southern weld County. High winds developed in the foothills on the 8th with gusts to 71 mph on Rocky Flats and to 75 mph at the National Center for Atmospheric Research mesa lab in Boulder. The high winds continued on the 9th with gusts to 83 mph near Fritz Peak…70 mph at Evergreen…and 67 mph at Parker. Northwest winds gusted to 55 mph on the 8th and to 58 mph on the 9th at Denver International Airport where the surface visibility was reduced to as low as 1 mile in blowing dust on the 9th.

In 2008…strong downslope winds developed in and near the Front Range foothills. Peak gusts included: 88 mph at Georgetown…85 mph at Berthoud Pass…81 mph at the NCAR Mesa Lab…78 mph at the national wind technology center… At 76 mph at Floyd Hill. At Denver International Airport… Gusty west winds to 48 mph were observed on the 8th.

9

In 1886…north winds were sustained to 42 mph…the highest winds of the month that year.

In 1893…northwest bora downslope winds were sustained to 40 mph with gusts as high as 70 mph in the city.

In 1960…the lowest pressure reduced to sea level ever recorded in Denver…28.83 inches (976.4 mb.)…occurred. The actual station pressure of 23.770 inches was also the lowest ever recorded.

In 1967…northwest winds gusted to 51 mph at Stapleton International Airport. Winds were strong and gusty all day.

In 1988…high winds occurred in and near the foothills. Winds gusted to 96 mph in east Boulder. As many as 1600 homes lost power when wires were downed by the wind. Some windows were blown out of cars near Rocky Flats south of Boulder where winds were clocked at 85 mph. In Broomfield…winds were recorded to 68 mph at Jefferson County Airport.

In 2009…high winds occurred in and near the foothills of Boulder and northern Jefferson counties. Peak wind gusts included 81 mph at the national wind technology center and 6 miles northwest of Boulder.

9-10

In 1934…rain changed to heavy snow on the afternoon of the 9th and continued through the day on the 10th. Snowfall totaled 7.4 inches in downtown Denver. North winds were sustained to 24 mph on the 10th.

In 1972…heavy post-frontal snowfall totaled 6.2 inches at Stapleton International Airport where northeast winds gusted to 46 mph on the 9th. Temperatures plunged from a high of 51 degrees on the 9th to a low of 16 on the morning of the 10th.

In 1981…the season’s coldest arctic air mass rolled into metro Denver plunging temperatures from 10 below to 20 degrees below zero. Bitter north winds gusting as high as 36 mph sent wind chill temperatures to 50 below zero. Two to four inches of snow fell over metro Denver with 6 to 12 inches in the foothills. A Boulder man died of hypothermia while cross country skiing in the mountains west of the city. Snowfall totaled only 1.5 inches at Stapleton International Airport where the minimum temperature on the morning of the 10th was 5 degrees below zero. The temperature that day warmed to a high of only 9 degrees.

In 2003…high winds occurred in and near the eastern foothills. The highest wind gusts recorded: included 80 mph atop Fritz Peak and 73 mph atop Blue Mountain and at the national wind technology center on Rocky Flats south of Boulder. At least 4 multi-car accidents occurred along State Highway 93…between Golden and Boulder when blowing snow caused whiteout conditions. Northwest winds gusted to 36 mph at Denver International Airport on the 10th.

9-11

In 1965…heavy snowfall totaled 6.2 inches at Stapleton International Airport where northeast winds gusted to 25 mph.

In 1993…the same storm that dumped heavy snow in the mountains combined with an arctic cold front to produce heavy snow across metro Denver. Upslope snows of 4 to 8 inches were common with some areas receiving nearly a foot. Ten inches of new snow were measured in Parker and 7 inches in southeast Denver. At Stapleton International Airport… Snowfall totaled 8.1 inches. Strong winds combined with the snowfall to produce near-blizzard conditions over the plains closing many roads east of Denver. North winds gusted to only 18 mph at Stapleton International Airport on the 9th.

Continue reading February 8 to February 14: This week in Denver weather history →

February typically brings warming temperatures and relatively dry conditions however our look back at this week in Denver weather history shows that is far from always the case. We see numerous significant snow events and periods of extreme cold, some of which turned deadly.

From the National Weather Service:

26-1

In 1888…a protracted warm spell lasted a week. Maximum temperatures ranged from 62 degrees on the 29th to an all-time record high for the month of 76 degrees on the 27th. Daily record high temperatures of 76…69…and 71 occurred on the 27th…28th…and 30th respectively. Record high minimum temperatures of 47 and 34 occurred on the 26th and 27th.
30-7

In 1985…a cold front on the 29th produced a protracted cold spell as arctic air remained entrenched across metro Denver. While the only daily temperature record set was a low maximum reading of 2 degrees on February 3rd…minimum temperatures plunged well below zero on 9 consecutive days. The coldest readings were 15 degrees below zero on January 31st and 14 degrees below zero on February 5th.

31-1

In 1963…high winds struck metro Denver. The strong Chinook winds reached 101 mph in Littleton…80 mph in Denver…and 90 mph at Rocky Flats. Among the hardest hit areas were Boulder where buildings under construction were blown down…porches and roofs blown off buildings…and power lines damaged. Damage totaled 100 thousand dollars in Boulder alone. In other areas…utility lines were damaged and many signs…antennas…and road markers were blown down. At Stapleton Airport…west winds gusted to 44 mph on the 31st and 66 mph on the 1st. The Chinook winds warmed maximum temperatures to 65 degrees on the 31st and to 70 degrees on the 1st.

31-8

In 1963…warm weather that began with the strong Chinook winds on the 31st and 1st continued through the 8th. Maximum temperatures through the period ranged from 52 degrees on the 2nd to 76 degrees on the 5th…which was a new record high for that date.

31-12

In 1899…a protracted cold spell lasted almost two weeks. Low temperatures plunged below zero on all days but February 9th with a reading of 6 degrees. The coldest low temperature of 22 degrees below zero on February 6th was a record low for the date. Low temperatures of 20 degrees below zero occurred on both February 11th and 12th… But only the 11th remains as the record minimum for the date. High temperature of only 5 degrees below zero on February 11th was a record low maximum for the date. High temperatures climbed to only zero degrees on both February 2nd and 3rd…but were not records. Intermittent light snow or flurries fell during the period. The most snowfall…2.0 inches…occurred on February 2nd.

1

In 1904…northwest winds were sustained to 51 mph with gusts to 60 mph. The Chinook winds warmed the temperature to a high of 55 degrees.

In 1907…west winds sustained to 42 mph warmed the temperature to a high of 59 degrees.

In 1932…the temperature rose from a low of 8 degrees at 7:00 am to the high of 58 degrees at 2:30 pm. The biggest jump occurred from 16 degrees at 8:00 am to 42 degrees at 9:10 am.

In 1951…the lowest recorded temperature in February…25 degrees below zero…occurred. The same temperature was also reached on February 8…1936.

In 1963…west-southwest winds gusted to 66 mph at Stapleton Airport where the strong Chinook winds warmed the temperature to a maximum of 70 degrees.

In 1970…snowfall of 0.3 inch contained only 0.01 inch of melted snow. This was the only measurable snow and precipitation for the month…making it the driest and least snowiest February on record. Snowfall also was only 0.3 inch on February 22-23…1992…equaling the least snowiest February.

In 1980…high winds occurred in the foothills. Wind gusts to 75 mph were reported at Wondervu. Northwest winds gusted to 32 mph at Stapleton International Airport.

In 1995…a short blast of early morning winds near the foothills produced a gust to 64 mph at Rocky Flats in northern Jefferson County. Winds gusting to 59 mph in Lakewood downed a few tree branches in residential areas. West winds gusted to 37 mph at Stapleton International Airport where the warm winds kept the temperature from falling below 43 degrees…setting a new record high minimum for the date. The temperature climbed to a non-record high of 63 degrees.

1-2

In 1934…light Chinook winds warmed temperatures to record levels on both days. Record maximum temperatures reached 73 degrees on the 1st and 74 degrees on the 2nd. West winds were sustained to 18 mph on the 1st.

1-3

In 1996…cold arctic air plunged temperatures below zero for more than 35 consecutive hours from late on the 1st until sunrise on the 3rd. The temperature warmed to only 1 degree below zero on the 2nd after a record low of 16 degrees below zero.

1-4

In 2011…a frigid arctic airmass settled into Front Range urban corridor. At Denver International Airport… Overnight low temperatures…from the 1st to the 3rd… Were 13 below zero…17 below zero and zero respectively. The icy temperatures caused pipes to crack and burst following the freeze. In Loveland…firefighters responded to more than a dozen water pipe breaks…most in fire sprinkler systems at businesses…apartments and assisted care facilities. At CU Earth Science Library in Boulder…more than 1000 books and several costumes for an upcoming production were damaged. At the county courts administration building in Jefferson County…a steady stream of water from a crack on the 5th floor… Went unnoticed on the 3rd and flooded all the floors of the administration wing overnight. As a result…much of the office equipment…furniture and carpet sustained water damage. A burst sprinkler line caused minor damage at the Platte Valley Medical Center in Brighton. The icy temperatures forced to closure of several school districts as well.

1-5

In 1985…the most bitter cold spell of the winter season brought sub-zero temperatures to metro Denver. Daily low temperature records were broken at Denver. The usual cold weather problems struck including stalled vehicles…jammed traffic lights…and frozen water and sewer lines. At Stapleton International Airport…the high temperature was only 2 degrees above zero on the 1st…setting a record low maximum for the date. Low temperatures reached 13 below zero on the 1st…12 below on the third…and 14 below on the 5th.

1-6

In 1989…one of the century’s worst doses of winter weather ravaged the entire state. Bitterly frigid weather moved into metro Denver on the 1st as snow buried many sections of the state. In metro Denver where 3 to 6 inches of snow fell…blowing snow and resultant poor visibilities caused a 46-car pile-up on I-25 in the middle of the city on the 4th. During the period…2 to 3 hour delays were common at Stapleton International Airport where snowfall from the storm totaled 4.3 inches and northeast winds gusted to 30 mph on the 1st. Intense cold accompanied the storm. Temperatures in Denver stayed below zero continuously for the best part of 3 days (3rd…4th…5th)…for a total of 69 hours. This is the fourth longest sub-zero period on record. Wind chill temperatures reached 50 degrees below zero. The mercury dipped to 24 degrees below zero on the 5th…setting a record for the date. This was the city’s coldest temperature in over 26 years. Low temperatures dipped below zero on 8 consecutive days (2nd-9th). High temperature of 9 degrees below zero on the 4th was a record low maximum for the date…as was the high of 5 degrees on the 5th. Extensive damage occurred when pipes and water lines froze and broke. Thousands of cars failed to start. On the 3rd…a 57-year-old woman died of hypothermia in an Arvada park. Eighteen high school students were treated for hypothermia after a 2-hour ride through Jefferson County in an unheated bus. At least 2 cases of frostbite were reported; there were undoubtedly many more.

Continue reading February 1 to February 7: This week in Denver weather history →