Thornton, Colorado, USA
UpdatedSun, 05-Dec-2021 12:05am MST 


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Thornton’s weekend weather to offer mild temperatures, dry conditions

Friday, December 3rd, 2021 5:04am MST

No change in the immediate future from our recent pattern of warm and dry weather. Temperatures this weekend will remain above normal with no sign of precipitation.

Friday offers up cooler temps than recent days but still warmer than normal. Look for highs around 60 degrees under sunny skies. Tonight, lows will dip to around freezing under mostly clear skies.

Saturday sees temperatures rebound a bit with highs climbing to the mid-60s. Sunny skies will be above with calm conditions. Saturday night, partly cloudy skies will be above with overnight lows in the mid-30s.

A passing trough and dipping jet stream are going to bring breezy conditions for much of the day Sunday. Highs will cool to the mid-50s under partly to mostly sunny.

Looking ahead to next week, the weather pattern does appear to be heading toward a bit more active period. Temperatures will be cooler and there are a couple chances for snow. Have a great weekend!

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Thursday brings another very mild day with temps potentially hitting record-setting territory

Thursday, December 2nd, 2021 5:02am MST

Yesterday the Mile High City tied the record high temperature for the date. Today has a good chance of following suit.

Sunny skies with nary a cloud are going to be above throughout the day. Overall conditions are going to be calm and dry. Highs today will top out near 75 degrees. This is far above the average high for the date of 45 degrees and could break the record high December 2nd of 74 degrees (1885).

Tonight, lows will drop to the mid-30s under mostly clear skies.

Keep an eye on the temps here.

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Denver ties record high temperature for December 1

Wednesday, December 1st, 2021 4:59pm MST

Record High Temperature

Well, December looks to continue the mild, dry weather of the previous two months as we tied the 48 year old record high for the date.

As measured at Denver International Airport, the Mile High City’s high temperature topped out at 73 degrees. This ties the previous record high for the date last set in 1973. Here in Thornton we were actually a touch warmer with a high of 74 degrees.

We may very well follow today’s record with another tomorrow. The record high for December 2 is 74 degrees set way back in 1885. Forecast highs for tomorrow are expected to come close to matching today’s.

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Mild temperatures, calm and dry conditions for the first day of December

Wednesday, December 1st, 2021 5:00am MST

December is here but you wouldn’t really know it from today’s weather. Temps are going to climb to about 25 degrees above normal as we continue our mild, dry pattern.

Mostly sunny skies will be above throughout the day today. Overall conditions will be calm and dry. High temperatures will be topping out around 70 degrees, far above the average high for the date of 45 degrees.

Tonight, lows will dip to the mid-30s under mostly clear skies.

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November 2021 top shots: Monthly photo slideshow

Tuesday, November 30th, 2021 7:10pm MST
A gorgeous Saturday sunrise. (Velinda Iverson)

A gorgeous Saturday sunrise. (Velinda Iverson)

Typically November is a quiet weather month with plenty of nice, fall days but it can also turn wet with healthy doses of snow and moisture.  The wide variety of conditions can create picturesque scenes ranging from blue skies and snow-capped mountains to a wintry wonderland in the metro area.

November is the second snowiest month of the year so winter conditions are not unusual.  Typically though, these bouts of cold are short-lived and normal daytime conditions are pleasant.

Outdoor activities continue to be quite popular during the month.  The cooling temperatures do oftentimes lead to an increase in wildlife activity.

All of the above help lead to a month in which a wide variety of scenes, flora and fauna can be captured.

  • Slideshow updated November 30, 2021
  • 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!

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Tuesday cools down some, temps will still remain above normal

Tuesday, November 30th, 2021 4:49am MST

A cold front moves in this morning and while that will serve to lower temperatures, it will still remain warmer than normal. Otherwise, conditions remain dry.

Sunny skies will be the general rule today with just a few clouds here and there. Some breezy winds can be expected from mid-morning through mid to late afternoon. Highs today will top out near the 60 degree mark. While cooler than yesterday, that is still well above Denver’s average high for the date of 46 degrees.

Tonight, skies will be mostly clear with lows dipping to the mid-30s.

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Sunny skies, very mild temperatures for Thornton’s Monday

Monday, November 29th, 2021 4:55am MST

While we continue to wait for any type of precipitation, we will enjoy another mild, dry workweek. It starts with temps much more like we would expect to see in early October than the end of November.

Clear skies start us off and few clouds will be seen throughout the day today. Overall, conditions will be calm and dry. Highs will be topping out right near the 70 degree mark.

Tonight, mostly clear skies will be above with lows dipping to near freezing.

Have a great day!

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November 28 to December 4: This Week in Denver Weather History

Sunday, November 28th, 2021 5:14am MST

This Week in Denver Weather History

Cold, snow and wind are the dominant conditions we see in our look back at this week in Denver weather history. All three are common this time of year and extremes with those conditions seem to be unusually common as well.


In 1952…the average coldest 4-day period in November in the previous 81 years of record occurred. Maximum temperatures of 19…15…21…and 25 degrees were recorded. Minimum temperatures were below zero each day with readings of 7 below…6 below…5 below…and 6 below.


In 1985…dense fog with visibilities as low as 1/8 mile occurred on five consecutive days at Stapleton International Airport. The fog was at times accompanied by light snow… Light freezing drizzle…or ice crystals. Fog occurred all day on both the 26th and 29th.


In 1884…a windstorm during the afternoon produced northwest sustained winds to 46 mph. Two wooden slats were blown out of the weather instrument shelter…and nearly all of the slats on the north and west sides were loosened.

In 1898…northwest winds were sustained to 50 mph with gusts as high as 80 mph.

In 1902…northwest winds were sustained to 40 mph with gusts to 48 mph. The strong apparent Bora winds warmed the temperature to a high of only 40 degrees.

In 1904…northwest winds sustained to 44 mph with gusts to 58 mph warmed the temperature to a high of 58 degrees.

In 1927…strong west winds occurred in Boulder…causing widespread minor damage. A wind gust to 65 mph was recorded at Valmont east of Boulder. The west winds possibly produced a cyclonic twist.

In 1928…heavy snowfall totaled 7.0 inches over downtown Denver.

In 1957…a vigorous cold front produced north-northeast wind gusts to 54 mph at Stapleton Airport. Light snow following the front totaled only 0.2 inch.

In 1970…strong Chinook winds reached 77 mph in downtown Boulder.

In 1978…wind gusts 60 to 90 mph were reported in and near the foothills.

In 1984…high winds of 60 to 80 mph occurred along the Front Range eastern foothills.

In Boulder…the high winds blew the roof off a service station. Several trees were felled… Damaging some cars. An elderly woman was injured when she was knocked down by a wind gust and blown 20 feet into some bushes. Northwest winds gusted to 36 mph at Stapleton International Airport.

In 1994…winds gusted to 72 mph in Boulder. No damage was reported. Northwest winds gusted to 35 mph at Stapleton International Airport.


In 1908…heavy snowfall overnight and for most of the day on the 29th totaled 12.5 inches. Precipitation was 1.09 inches. Northwest winds were sustained to 26 mph on the 29th.

In 1928…a major storm dumped 15.5 inches of snowfall on downtown Denver. North winds were sustained to 18 mph with gusts to 19 mph on the 28th.

In 1992…an upper level storm system moved across metro Denver…but left only a dusting of snow. Snowfall totaled only 1.6 inches at Stapleton International Airport where north winds gusted to 25 mph. Other snow amounts included: 8 inches at Conifer…6 inches at Lake Eldora…3 inches at Rollinsville and in southeast Denver.

In 1997…a storm system tracking across northern New Mexico produced strong north to northeast upslope flow against the eastern slopes of the Front Range and Palmer Ridge. Snowfall totals in Jefferson County included: 14 inches near Deckers; 12 inches at Castle Rock and Sedalia; 10 inches near Conifer…11 miles southwest of Morrison…and at Buffalo Creek. Elsewhere…snow accumulations were less. Snowfall totaled only 0.7 inch at the site of the former Stapleton International Airport on the 27th and 28th.

In 2004…heavy snow fell in the foothills and across metro Denver. In the foothills…snowfall totals included: 13 inches at Roxborough State Park and Eldorado Springs… 11.5 inches near Conifer…11.0 inches near Nederland…and 10 inches near Indian Hills. Across metro Denver snowfall totaled 14 inches near Sedalia…9 inches near Louisville… 8 inches at Ralston Reservoir…and 5.1 inches in the Stapleton area of Denver. Northeast winds gusted to 28 mph at Denver International Airport on the 28th.

In 2006…a slow moving storm system brought heavy snow to the mountains and to the eastern foothills where snowfall ranged from 8 to 18 inches. Some of the more impressive snow totals included: 18 inches at Genesee…17.5 inches near Boulder…17 inches at Aspen Springs…16.5 inches 10 miles northwest of Golden…15 inches at Eldorado Springs… 14.5 inches in Idaho Springs and near Jamestown…12 inches in grant and near Indian Hills…11.5 inches near Blackhawk… 11 inches at Gross Reservoir and Eldora…and 10.5 inches in Conifer. Across metro Denver…storm total snowfall generally ranged from 5 to 9 inches with the heaviest amounts near the foothills in Boulder and Jefferson counties. The most impressive totals included: 15.5 inches at Ken Caryl…12 inches in Boulder…7.5 inches near Morrison…and 7 inches near both Chatfield and Ralston reservoirs. Snowfall totaled only 4.2 inches in the Denver Stapleton area. Northeast winds gusted to 31 mph at Denver International Airport on the 28th.


In 1991…a winter storm dumped heavy snow in the foothills and near the palmer divide with 10 inches recorded at Conifer and Golden Gate Canyon…12 inches in Morrison… 6 inches at Castle Rock and Parker. Only 3.4 inches of snow fell at Stapleton International Airport where north winds gusting to 35 mph on the 29th…produced some blowing snow. Some light freezing drizzle also fell on the 28th and 29th.


In 1877…the all-time lowest recorded minimum temperature in the month of November…18 degrees below zero…occurred. The high temperature for the day was 16 degrees.

In 1899…northwest winds were sustained to 51 mph with gusts as high as 60 mph. The Chinook winds warmed the temperature to a maximum of 74 degrees…a record high for the date and the warmest of the month that year. The minimum temperature was only 39 degrees.

In 1927…post-frontal rain changed to snow and totaled 5.8 inches over downtown Denver. Northeast winds were sustained to 22 mph.

In 1977…85 mph winds were reported at Wondervu in the foothills southwest of Boulder. Northwest winds gusted to 39 mph at Stapleton International Airport.

In 1980 strong Chinook winds reached 85 mph in Boulder… Blowing traffic signals and street lights down. Some windows were shattered by the wind. West winds gusted to 37 mph at Stapleton International Airport.

In 1994…high winds blew across the Front Range eastern foothills. Wind gusts to 92 mph occurred atop Squaw Mountain…5 miles south of Idaho Springs…and to 82 mph on Fritz Peak near Rollinsville in the foothills southwest of Boulder. A wind gust to 75 mph was recorded at Jefferson County Airport near Broomfield. Northwest winds gusted to only 35 mph at Stapleton International Airport. No damage was reported.


In 2008…a storm system produced locally heavy bands of snow across Douglas…Elbert and eastern Jefferson counties. Northerly winds gusting to 50 mph caused snow drifts to pile up to 2 feet in depth. Storm totals included: 12 inches just southwest of Kassler…11.5 inches…6.5 miles southwest of Castle Rock; 11 inches…8.4 miles southeast of Aurora and 9 miles west of Littleton; 10 inches at Louviers… 8 inches…2 miles west-southwest of Highlands Ranch and 5 miles south-southeast of Sedalia…and 7.5 inches…14 miles west-southwest of Agate and at Castle Pines. At Denver International Airport…2 inches of snow was observed. North winds gusted to 46 mph on the 30th.


In 1899…west winds were sustained to 45 mph with gusts as high as 48 mph.

In 1903…west winds sustained to 44 mph with gusts to 54 mph warmed the temperature to a high of 57 degrees.

In 1981…strong winds blasted the foothills. In Wondervu… Winds were clocked to 81 mph with many other locations in the foothills reporting over 60 mph. Northwest winds gusted to 28 mph at Stapleton International Airport.

In 1986…the worst snow storm of the season dumped from 5.0 inches of snow at Stapleton International Airport to 14 inches over the higher southwestern suburbs. On the Sunday after Thanksgiving…one of the busiest travel days of the year at Stapleton International Airport…two of the four runways were closed and flights were delayed up to four hours. Near-blizzard conditions prevailed on the plains east of Denver…closing both I-70 and I-76 for a time. North wind gusts to 36 mph were recorded at Stapleton International Airport.

In 2000…strong winds raked metro Denver. In Thornton…a construction worker was critically injured when the scaffolding on which he was standing collapsed…throwing him 25 feet to the ground. West winds gusted to 54 mph at Denver International Airport.

» Click here to read the rest of November 28 to December 4: This Week in Denver Weather History

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Thornton’s Thanksgiving weekend to offer up mild, dry weather conditions

Thursday, November 25th, 2021 5:33am MST

There will be no weather-related issues going to and from Grandma’s house for the holiday, or the immediate days after. We will be enjoying unusually warm weather and conditions will be calm.

For Thanksgiving Day, sunny skies will be above with highs in the mid-50s. Tonight, skies remain mostly clear with lows near freezing.

Black Friday warms up even more with highs in the mid-60s and lots of sun above. Friday night, partly cloudy skies will be overhead with lows in the mid-30s.

A weak disturbance moves in Saturday cooling things down again. Highs will still be warmer than normal in the mid-50s, again with sunny skies above. Saturday night, lows dip below freezing with mostly clear skies.

The four-day period closes out with a bump in temps as highs return to the mid-60s.

From the Thornton Weather family to yours, we wish you all a very happy Thanksgiving!

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Wednesday in Thornton to bring chilly, blustery weather conditions

Wednesday, November 24th, 2021 4:59am MST

With the arrival of a cold front, we chill out a bit with cooler temps and some wind. Sadly, precipitation is likely to continue to evade us.

Mostly cloudy skies start us off early. We may see a few breaks in the clouds through the day but overall, clouds will persist. High temperatures today will top out in the mid-40s. North winds will be relatively persistent throughout the day making it feel chilly. There is just the slightest chance for a snow flurry this afternoon or evening but that seems quite unlikely.

Tonight, cloud cover will ease with clear skies after midnight. Overnight lows will dip to around 20 degrees.

What lies ahead for Thanksgiving and the holiday weekend? See the extended forecast here.

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