Category Archives: Climatology

Denver sets record high temperature for April 4

Record High Temperature

Following on yesterday’s record-tying mercury reading, Denver bested that with a record-setting high temperature today.

As measured at Denver International Airport, the Mile High City’s official high temperature reached 80 degrees. This easily breaks the previous record high for April 4 of 76 degrees set in 1959.

Here in Thornton, we were even warmer with a high of 81 degrees.

Thornton’s April 2021 weather preview: Winter, spring and summer all in one month

Thornton's April weather previewApril marks a transition between winter and summer for most of the country but for Denver it is especially true as we can see a stunning variety of weather.

The proverbial April showers are certainly a possibility for Denver. Snow? Tornadoes? Thunderstorms? You bet – all can happen!

For good measure throw in a chance for hail and even dust storms and April gives every type of weather condition you could like – or hate.

Denver ties record high temperature for April 3

Record High Temperature

A beautiful day along the Colorado Front Range and one that has entered the record books.

As measured at Denver International Airport, the official high temperature today in the Mile High City topped out at 78 degrees. This tied the record high for April 3 set in 1943.

Here in Thornton, we were just a touch warmer with a high of 79 degrees.

Tomorrow looks to be a record-setter as well. The record high for April 4 is 76 degrees set in 1967 and years prior. With a forecast indicating highs near 80 degrees, that record will likely fall.

Thornton’s March 2021 preview: Temps warm considerably but snow a very real possibility

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 2021, click here.

Denver sets record low temperature for February 14

Record Cold Temperatures

It’s a cold one and one that easily enters the record books.

As measured at Denver International Airport, the Mile High City saw a low temperature of -14 degrees. This easily bests the previous record low for February 14 of -10 degrees set in 1903.

Additionally, the high temperature only reached 1 degree. This is the coldest high temperature recorded for the date. The old record was 8 degrees set in 1895.

Here in Thornton we didn’t get quite as cold with a low of -9 degrees and a high of 5 degrees.

Thornton’s February 2021 weather preview: Temps begin to warm, snow can be elusive

February in Colorado typically brings to an end an extended period when average temperatures are at their lowest. Winter begins to loosen its grip and temperatures get warmer but precipitation is not a particularly common event during the month.

Thus far, our snow season has been a bit of a disappointment. Things looked hopeful at the start but the last couple of months have seen things really lag .  February is only our sixth snowiest month so we may not see much improvement in the seasonal totals this month.

Temperatures however do usually see a nice rebound during the month. Average high temperatures climb from an average of 44 degrees at the start to 50 degrees by the end of February.

For the complete February preview including a look at historical averages and extremes as well as a look at what long range forecasts are predicting, click here. 

Denver’s Christmas weather not usually white

As Christmas gets closer everyone always wonders if we are going to get the proverbial white Christmas. Unfortunately, if you look at Denver and Thornton weather history, the chances aren’t all that good but it also depends on what you define as a white Christmas.

If to you a white Christmas means having actual snowfall on Christmas Day the chances aren’t that good. But, if simply having snow on the ground suffices, the chances improve considerably.

For a complete look at Denver’s Christmas weather statistics, click here.

For the latest Thornton weather forecast for Christmas, check out our forecast page.

White Christmas probability map for the contiguous United States. Click for larger view. (NOAA)
White Christmas probability map for the contiguous United States. Click for larger view. (NOAA)

Thornton’s December weather preview: Winter arrives in earnest

Thornton, Colorado's December Weather Preview

Recent months have, overall, been warmer and drier than normal.  Last month continued that trend.  What will December hold for us?

The month of December brings with it the official start of winter and oftentimes, colder and snowier weather conditions.

It however can also offer unseasonably warm temperatures and bone dry conditions.  Given our recent mild and dry weather, we are certainly hoping for a change in the coming month.

Overall December’s monthly mean temperature of 30.0 degrees (1981 – 2010 averages) makes it our coldest month.  Snow is always on everyone’s mind this time of year but December is only our 3rd snowiest month behind March and November with an average of 8.5 inches of the white stuff.

Get all the details on Thornton’s December weather including a look back at historical events and a look at the long range forecast in our December weather preview here.

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Thornton’s November weather preview: Transition to winter weather begins in earnest

Thornton's November weather previewThe weather during the month of November in Denver metro area can offer just about anything.  While it is normally a quiet month, it can be prone to extremes.

November has historically been one of Denver’s snowiest months and major snowstorms are not entirely uncommon.  However conditions can also be quite dry.

Temperatures during the month continue to cool as we get closer to winter and by the end of the month the low temperatures routinely dip to 20 degrees or below.  At times it can in fact bring conditions more like what we see in January.

Get all the details on November’s weather and what we can expect in our complete preview here.