Thornton, Colorado, USA
UpdatedSat, 28-Mar-2020 1:55pm MDT 


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Thornton’s weekend weather starts out unsettled, will end calmer and seasonal

Friday, March 27th, 2020 4:59am MDT

A bit of a mixed bag of weather for us over the three day period. We start out with chilly temps and a bit of winter-like precipitation but then things will dry out and warm up.

For today, fog greets us early and then cloudy skies will be above for the rest of the day. Some light rain / freezing drizzle will be possible early then light rain this afternoon. Highs will only be in the low 40s. As temperatures drop late this afternoon and evening, precipitation will change over to snow and continue till midnight before tapering off.

Accumulations of an inch or so are possible, maybe more depending on when the switch to snow occurs. Overnight lows tonight will be just below freezing.

Saturday will be dry but cool with highs topping out around the 50 degree mark. Breezy winds will be the most notable feature and will persist through the day and into the evening. Saturday night, partly cloudy skies will be above with lows in the mid to upper 20s.

Sunday looks to be the most pleasant of the period. Mostly sunny skies will be above with highs in the mid to upper 50s. Have a great weekend and stay safe!

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March 2020 top shots: Monthly photo slideshow

Friday, March 27th, 2020 2:18am MDT
The first sunrise of March 2020 is a stunner. (Alycia Gilliland)

The first sunrise of March 2020 is a stunner. (Alycia Gilliland)

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 27, 2020. 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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Thornton to enjoy a mild Thursday, some breezy winds in the afternoon

Thursday, March 26th, 2020 4:55am MDT

Today’s weather looks to be very much like what we experienced yesterday. There will be a few more clouds but temperatures again will be above normal and the afternoon will bring some breezy winds.

Mostly sunny skies will be the general rule for the daytime hours. High temperatures will top out in the mid to upper 60s. Winds will be light this morning then we see breezy winds after noon and into the evening.

Tonight, partly clear skies will be above with overnight lows in the mid-30s. Our next weather disturbance will work its way through in the early morning hours Friday and may bring a bit of rain / snow.

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Warm temperatures Wednesday to be coupled with breezy winds

Wednesday, March 25th, 2020 4:52am MDT

Some good, some not-so-good aspects to #Thornton’s weather today. While we will enjoy a good bit of sun and temperatures well above normal, we also will see some pretty breezy winds.

The day starts off with some cloud cover but overall mostly sunny skies will be the rule for the day. Temperatures will be mild with highs in the mid-60s.

Driving those temperatures will be downslope winds that will be picking up by mid to late morning and continuing into the evening. Gusts pushing toward 35mph will be possible at their height.

Tonight, winds will ease around sunset and partly clear skies will be above. Overnight lows will drop to the mid-30s. Keep an eye on the temps and wind speeds with our live weather gauges here.

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Temps a bit above normal, lots of sun and some breezy winds for Thornton’s Tuesday

Tuesday, March 24th, 2020 4:53am MDT

A good looking day ahead for us. We will see high temperatures above normal and while there will be some breezy winds, they shouldn’t be too intrusive.

We start out with sunny skies and may see a few clouds later today. High temperatures will reach the low 60s. Late morning through late afternoon will see some breezy winds.

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

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Monday brings temps near normal, just a slight chance for a shower

Monday, March 23rd, 2020 5:15am MDT

A pretty good looking early spring day ahead for Thornton. We will have some cloud cover but temps will be near normal and the afternoon and evening bring a chance for a rain shower.

Mostly clear skies start us off with cloud cover slowly increasing this morning leading to partly clear skies in the afternoon. High temperatures will top out in the mid-50s, right near the average high for the date of 57 degrees. We stand just a slight chance to see some light shower activity from 3:00pm to 11:00pm.

Tonight, cloud cover will ease once any showers are done and overnight lows will dip to around freezing.

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March 22 to March 28: This week in Denver weather history

Sunday, March 22nd, 2020 5:15am MDT

This Week in Denver Weather History

This week in Denver weather history are a number of interesting events.  As March comes to a close we are not yet done with winter so snow is certainly still possible but we also start seeing more Spring-like weather.  Reminders of this include the coldest temperature ever recorded in March – 11 degrees below zero 123 years ago.  Conversely, 38 years ago the highest temperature ever recorded in March of 84 degrees was recorded.

From the National Weather Service:


In 1944…heavy snow fell over metro Denver for a total of 36 hours. The storm dumped 18.5 inches of snowfall over downtown Denver and 12.2 inches at Stapleton Airport. Fortunately…there were no strong winds with the storm. North winds to only 19 mph were recorded on the 21st.


In 1955…wind gusts to 98 mph were recorded at Rocky Flats south of Boulder. Some damage and a few minor injuries were reported in Boulder. Northwest winds were sustained to 28 mph with gusts to 39 mph at Stapleton Airport on the 22nd.

In 1966…a vigorous cold front produced only 1.7 inches of snowfall at Stapleton International Airport…but northeast winds gusted to 49 mph on the 21st. Temperatures cooled from a maximum of 66 degrees on the 21st to a minimum of 14 degrees on the 22nd. Strong winds occurred on both days.

In 1992…an arctic cold front produced upslope snow across metro Denver mainly west of I-25. Castle Rock reported 6 inches of snow with 3 inches at Evergreen. At Stapleton International Airport…only 1.5 inches of snowfall were measured and northeast winds gusted to 18 mph on the 21st.


In 1905…apparent post-frontal north winds were sustained to 49 mph.

In 1922…a vigorous cold front with north winds sustained to 41 mph brought only 0.6 inch of snowfall to the city. These were the highest winds of the month.

In 1966…high winds caused extensive blowing snow that impeded traffic and closed highways over a wide area of eastern Colorado. Wind damage was widespread…but minor. North wind gusts to 47 mph were recorded at Stapleton International Airport where visibility was reduced as low as 1/8 mile in blowing snow.

In 1975…a strong west wind gust to 51 mph was recorded at Stapleton International Airport…while east of Denver the strong winds caused minor property damage and considerable blowing dust which closed several roads.

In 1979…near-blizzard conditions paralyzed the northeastern quarter of the state. Strong winds and drifting snow closed many roads…including I-25 and I-70. Power outages darkened sections of metro Denver. Snow accumulations of 4 to 12 inches were measured over the plains with drifts several feet deep. Only 3.5 inches of snow were recorded at Stapleton International Airport where northeast winds gusted to 39 mph causing some blowing snow.

In 1995…strong winds associated with a fast moving pacific cold front moved from the mountains into metro Denver. Winds estimated at 60 to 75 mph picked up rocks and shattered the windows of a car in Louisville. The strong winds blew down and partially destroyed two houses under construction just north of Thornton. West winds gusted to 53 mph at Denver International Airport where the visibility was briefly reduced to 1/2 mile in blowing dust.

In 2016…two brief but powerful gustnadoes developed along a convergence line that formed in the suburbs just north and west of Denver. Three power poles were knocked down. In addition…a small storage shed was destroyed.


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.


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.


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.

» Click here to read the rest of March 22 to March 28: This week in Denver weather history

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Thornton’s weekend weather starts out with a chill, will end with near normal temps

Friday, March 20th, 2020 5:18am MDT

Spring has arrived with a chill and snow as we received 7.5 inches from yesterday’s storm. Today may bring some additional, light showers but then we will begin to dry out and see mercury readings near normal by Sunday.

Today, cloudy skies will be above with some light snow / flurries possible into the evening. High temperatures today will be in the mid-30s. Tonight, any lingering snow should end by midnight and then some clearing will be seen. Overnight lows will be dipping to near 20 degrees.

Saturday sees us begin to rebound with some AM fog then mostly sunny skies for the balance of the day. Highs will have the potential to push to the upper 40s as long as the snow cover doesn’t affect them too much. The evening may bring a short period of rain / snow but no accumulation is expected. Overnight Saturday into Sunday, skies will be mostly cloudy with lows in the mid-20s.

Sunday will be the most pleasant day of the three day period. Mostly sunny skies will be above with highs in the low to mid-50s.

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Thornton welcomes the arrival of spring with a return to wintry weather

Thursday, March 19th, 2020 5:20am MDT

Spring officially arrives at 9:49pm tonight and Mother Nature seems intent to send out winter with a bit of a bang. A winter storm is going to deliver colder temperatures, rain and the potential for a good shot of snow.

Cloudy skies will be above throughout the day. Light rain started not long after midnight and will continue this morning. Some increase in rain rates can be expected.

As cold air moves in later this morning, we will see a mix of rain and snow then by mid-afternoon precipitation will be entirely snow. Snow will continue into the evening with the bulk of it ending by about midnight. Overnight lows will drop to around the 20 degree mark.

A Winter Storm Warning will be going into effect at 9:00am and run through 6:00am Friday. The National Weather Service is calling for 3 to 8 inches from now through Friday AM.

As we discussed last night, we are a bit less than sold on some of the more dire predictions for this system. Temperatures are going to remain relatively warm this morning and the ground is quite warm. Both will be big factors in the final snow totals.

If that transition to snow happens earlier / faster than what we are thinking right now, the storm may have a bigger impact. We continue to expect Thornton will be at the lower end of accumulations reported when all is said and done.


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Thornton to enjoy a warm day Wednesday before a storm Thursday

Wednesday, March 18th, 2020 5:08am MDT

One more mild day on tap for us with temperatures well above normal and a chance for showers later today. Those showers will indicate a transition to colder and snowier weather for tomorrow.

Today starts off with mostly sunny skies that will be with us through the morning. Then, an increase in cloud cover will follow in the afternoon. High temperatures today will be about 10 degrees above normal topping out in the mid-60s. After noon and through this evening we see a bit of a chance for some light showers, perhaps with some thunder thrown in there.

Tonight, skies remain mostly cloudy with showers and overnight lows in the mid-30s.

Focus is on the impact tomorrow of the system as cold air will push in Thursday morning. That should bring about snow for much of the day with moderate to heavy rates possible.

The National Weather Service has issued a Winter Storm Watch for the period from 10:00am Thursday to 6:00am Friday. The potential for 3 to 7 inches is there although we expect Thornton to be at the lower end of totals.

Our Winter Weather Briefing Page has all the latest.

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