Thornton, Colorado, USA
UpdatedFri, 24-Mar-2023 5:05pm MDT 


ThorntonWeather.com on Twitter

ThorntonWeather.com on Facebook


Weather Geek Stuff - weathergeekstuff.com

Rocky Mountain Weather Network

Tony's Takes Photography


Recent News and Posts

Thursday brings temperatures near normal, sunny, calm conditions

Thursday, February 2nd, 2023 5:01am MDT

A tranquil day ahead for Thornton as conditions continue to warm. We will enjoy lots of blue sky above and mercury readings will be right near average for the date.

Sunny skies start us off this morning and will continue throughout the day. Light winds will be out of the south, conditions dry. Look for highs to top out near the average high of 44 degrees, perhaps a couple of degrees above that.

Tonight, skies will be mostly clear with lows dipping to around 20 degrees.

Join the Discussion - Post your commentJoin the Discussion!

Thornton to break above freezing, enjoy lots of blue sky

Wednesday, February 1st, 2023 5:04am MDT

After four days with highs below the freezing mark, today we should – finally – get above it. It will still be chilly, however, but we will enjoy lots of sun above.

In many ways, today looks a lot like yesterday. Sunny skies will be above throughout with calm conditions. High temperatures should get up to the mid-30s.

Tonight, skies remain mostly clear with lows in the teens.

Join the Discussion - Post your commentJoin the Discussion!

January 2023 top shots: Monthly photo slideshow

Tuesday, January 31st, 2023 8:10am MDT
Snow and fog start off the New Year. (Tony's Takes Photography)

Snow and fog start off the New Year. (Tony’s Takes Photography)

As one of our coldest months, January can be a good month to hibernate inside and avoid the outdoors.  But, like any month in Colorado, photo opportunities abound as our monthly slideshow demonstrates.

Snow is not normally dominant in the month but when it does fall, it can create a beautiful blanket of white.  Throw in the amazing sunrises and sunsets we receive in the middle of winter as well as wildlife and a host of other subjects and the imagery can be quite beautiful and stunning.

  • Slideshow updated January 31, 2023
  • 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!

Join the Discussion - Post your commentJoin the Discussion!

The sun returns to Thornton on Tuesday but chilly temps will linger

Tuesday, January 31st, 2023 5:04am MDT

Overall, a much improved day of weather for us. We will still see temps well below normal as we fight off the cold air and snow cover but it won’t be near as cold as the last couple of days and the sun stages a return.

Look for sunny skies to be above throughout the daytime hours. Overall, conditions will be calm and cold. Look for highs to top out in the mid to upper 20s.

Tonight, skies remain mostly clear with lows dipping down into the single digits.

Join the Discussion - Post your commentJoin the Discussion!

Denver sets record low maximum for January 30

Monday, January 30th, 2023 11:59pm MDT

Record Cold Temperatures

Yeah, it definitely did not get very warm today and the record books now reflect that. After tying a record low this morning, now we have a new record low maximum.

As measured at Denver International Airport, the Mile High City only saw a high temperature today of 4 degrees. This breaks the previous record low maximum of 4 degrees set more than 100 years ago in 1918.

Here in Thornton, we managed to stay a bit warmer, topping out at 11 degrees.

Join the Discussion - Post your commentJoin the Discussion!

Denver ties record low temperature for January 30

Monday, January 30th, 2023 7:08am MDT

Record Cold Temperatures

With our latest big chill having settled in, the mercury is dropping into record-setting territory.

As measured at Denver International Airport, the official low temperature this morning dropped to -10 degrees. This tied the record low for the date last set in 1985.

Here in Thornton, we didn’t plummet quite that low as we bottomed out at -4 degrees.

Join the Discussion - Post your commentJoin the Discussion!

Thornton’s workweek starts out with a big chill, light snow

Monday, January 30th, 2023 5:05am MDT

One more extraordinarily cold day for us with highs only reaching the single digits and lows tonight dipping below zero.

Mostly cloudy skies will be above throughout the day. There might be a few glimpses of blue but they will be fleeting. The cold air remains entrenched and will cause us to only see a high of around 6 degrees. Some light snow can be expected throughout the daytime hours but with only minimal accumulations.

Tonight, snow will end in the late evening and skies will begin to clear. Overnight lows will bottom out around -4 degrees. A Wind Chill Advisory will again be in effect tonight so please exercise caution.

Join the Discussion - Post your commentJoin the Discussion!

January 29 to February 4: This Week in Denver Weather History

Sunday, January 29th, 2023 5:06am MDT

This Week in Denver Weather History

You just never know what you are going to get with the weather in Denver and we see that in our look back at the Denver weather history books. From cold and snow to damaging winds and spring-like temperatures, we can and do see it all.

From the National Weather Service:


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.


In 1951…a major storm dumped 10.1 inches of snowfall at Stapleton Airport. Most of the snow…8.3 inches…fell on the 29th. Cold arctic air accompanied the snow. Several temperature records were set…including record low maximum temperatures of 4 on the 28th and 4 below zero on the 29th and record low temperatures of 12 below zero on the 29th and 24 below zero on the 31st. Temperatures were below zero for 45 consecutive hours.


In 1956…snowfall totaled 5.5 inches at Stapleton Airport where east winds gusted to 32 mph on the 28th.

In 1972…cold west winds buffeted Boulder. A wind gust to 92 mph was recorded at the National Bureau of Standards…while a gust to 76 mph was measured in downtown Boulder. Two mobile homes were overturned in Boulder. Other damage was minor. Northwest winds gusted to 40 mph at Stapleton International Airport on the 28th.

In 1987…strong winds buffeted the Front Range foothills and spread east over the plains. The highest wind recorded was 99 mph on the 29th at both the National Center for Atmospheric Research in Boulder and the Rocky Flats plant south of Boulder. Wind gusts in excess of 80 mph were common. A northwest wind gust to 54 mph was recorded at Stapleton International Airport on the 28th with a gust to 41 mph on the 29th. Planes were damaged at both the Boulder and Jefferson County Airports. Hangars were also damaged at Jefferson County Airport. Many windows were broken…signs toppled…and trees downed. A brick wall was blown onto parked cars in Lakewood. A couple of houses in Lakewood were unroofed…while falling trees damaged others. Two people were injured by flying debris in Lakewood and Golden. Total insured damage along the Front Range was 10 million dollars making the wind storm the second most costly on record in Colorado at the time.

In 1995…deepening upslope winds along the eastern foothills on the 28th gave way to periods of heavy snow during the night and early morning hours of the 29th. Snow fell to a depth of 8 inches in both Golden and Boulder with up to a foot in the foothills. Only 1.9 inches of snow fell at Stapleton International Airport…where east winds gusted to 22 mph on the 28th.

In 2001…heavy snow fell across metro Denver. The heaviest snowfall occurred from just south of Denver to around Castle Rock. Snow amounts included: 12 inches east of Parker…9 inches near Elizabeth and in Littleton…8 inches near Castle Rock and in Parker…and 7 inches in Aurora. Snowfall totaled 6.0 inches at the site of the former Stapleton International Airport.


In 1887…winds were strong and gusty for three days in the city. West and northwest winds were sustained to 56 mph on both the 28th and 29th and to 44 mph on the 30th. Temperatures warmed to a high of 57 degrees on the 29th.


In 1900…northwest winds were sustained to 45 mph with an extreme velocity of 46 mph.

In 1914…this was the last day of 60 consecutive days with snow cover of one inch or more in Denver. This third longest period of snow cover on record began with the record breaking snow and blizzard on December 1-5… 1913 when a total of 45.7 inches of snow fell in downtown Denver. Additional snowfall during December and January prolonged the event. Snow depth on the ground to the nearest tenth of an inch was measured once daily at 6:00 pm MST.

In 1927…west winds were sustained at 40 mph with gusts to 42 mph.

In 1942…heavy snowfall totaled 6.2 inches in downtown Denver. North winds were sustained to 17 mph.

In 1965…strong winds occurred in Boulder for the third consecutive day. Only limited minor damage was reported. Northwest winds gusted to 40 mph at Stapleton International Airport.

In 1984…highs winds in and near the foothills produced wind gusts as high as 71 mph in Boulder. A plane was flipped over at Jefferson County Airport and damaged beyond repair. In Lakewood…two construction trailers were damaged by the gusts. North winds gusted to only 38 mph at Stapleton International Airport.

In 1990…gale to hurricane force winds gusts raked the foothills. Wind gusts of 50 to 90 mph were common in Boulder County. A peak wind of 94 mph was clocked at Table Mesa in southwest Boulder. Scattered power outages and minor property damage were reported. West winds gusted to 46 mph at Stapleton International Airport.


In 1985…an arctic air mass with snow closed I-70 for a time in Denver and east of Denver. Snowfall totaled 5.4 inches at Stapleton International Airport where north winds gusted to 29 mph on the 29th.


In 1883…a major winter storm dumped 19.3 inches of snow on downtown Denver. Most of the snow…12.2 inches…fell on the 31st. This was the heaviest snowfall to hit the city in years. Temperatures plunged from a high of 52 degrees on the 29th to a low of 13 degrees on the 31st. Precipitation from the storm totaled 2.23 inches. The 1.22 inches of precipitation on the 31st was the greatest calendar day and 24 hour precipitation ever recorded in the city during the month of January.


In 1886…west winds were sustained to 42 mph and were the strongest winds of the month that year. The winds warmed the temperature to a high of 52 degrees in the city.

In 1890…west winds were sustained to 40 mph with gusts to 48 mph in the city.

In 1971…a wind gust to 102 mph was recorded in Boulder at the National Center for Atmospheric Research. Elsewhere in Boulder…winds gusted to 76 mph. Northwest winds gusting to 46 mph at Stapleton International Airport warmed temperatures to a high of 66 degrees.

In 1976…a rapid moving cold front produced wind gusts 50 to 70 mph causing visibilities to be reduced to less than 1/2 mile in blowing dust for 1 to 2 hours closing some major highways. A north wind gust to 55 mph was recorded at Stapleton International Airport.

In 2003…strong winds developed in and near the foothills. Recorded wind gusts included: 86 mph near Rollinsville… 76 mph in Evergreen…and 75 mph in central Boulder. West winds gusted to 43 mph at Denver International Airport.

In 2018…high winds occurred in and near the Front Range Foothills. Peak wind gusts included: 101 mph atop Berthoud Pass; 97 mph near Gold Hill; 80 mph at the NCAR Mesa Lab southwest of Boulder and near the former Rocky Flats site; with 75 mph near Nederland. The high winds toppled a large tree at the mouth of Boulder Canyon.


In 1908…an apparent strong cold front plunged temperatures 45 degrees in 24 hours from 47 degrees at noon on the 30th to only 2 degrees at noon on the 31st. North winds were sustained to 30 mph on the 30th. Snowfall was only 0.8 inch on the 31st.

In 1965…a major storm dumped 10.4 inches of snow over metro Denver. After 5 inches of snow fell in Boulder… Strong Chinook winds developed…warming the temperature 25 degrees in 90 minutes. Wind gusts to 97 mph were recorded on Table Mountain in Boulder. Winds gusts to 53 mph were measured in downtown Boulder where some damage occurred. Minor wind damage also occurred in western suburbs of Denver. West winds gusted to 51 mph at Stapleton International Airport on the 31st.

In 2005…a winter storm brought heavy snow to the Front Range foothills. Storm totals included: 17 inches at Aspen Springs…13 inches 7 miles southwest of Boulder and at Lake Eldora…12.5 inches near Blackhawk…11.5 inches at Rollinsville and near Nederland…11 inches near Evergreen and Golden and at Gross Reservoir…and 10 inches at cabin creek. Lesser amounts of snow fell over the city. Only 1.9 inches of snow were measured overnight at Denver Stapleton. North winds gusted to 30 mph at Denver International Airport…where freezing fog during the early morning of the 30th reduced the surface visibility to as low as 1/8 mile. Light rainfall… Rare in January…totaled 0.06 inch at Denver Stapleton on the early morning of the 30th.


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.


In 1876…hurricane force winds caused some damage in Boulder.

In 1951…the low temperature plunged to 24 degrees below zero.

In 1933…snowfall was 0.2 inch in downtown Denver. This was the only measurable snowfall of the month and resulted in 0.01 inch of melted snow…the only measurable precipitation of the month.

In 1964…high winds blew down a sidewalk cover where a building was under construction…injuring a young woman. Three men were injured when a brick wall at a construction site toppled on them. All were treated for face…leg…and neck injuries. A west-northwest wind gust to 47 mph was recorded at Stapleton International Airport.

In 1969…high winds struck Boulder with gusts to 115 mph recorded at the National Center for Atmospheric Research and 83 mph in downtown Boulder. Schools were closed because of danger from flying debris. Some damage and minor injuries occurred. Northwest winds gusted to 35 mph at Stapleton International Airport.

In 1985…bitterly cold weather froze pipes and cars and forced some schools to close across metro Denver. Minimum temperatures dipped to as low as 15 below to 20 below zero across metro Denver. The low temperature was 15 below zero at Stapleton International Airport. » Click here to read the rest of January 29 to February 4: This Week in Denver Weather History

Join the Discussion - Post your commentJoin the Discussion!

Thornton’s weekend starts out warmer but much colder weather soon arrives

Friday, January 27th, 2023 4:59am MDT

It has been 10 days since we have seen a mercury reading at or above normal. The good news is that today we may finally break that streak. The bad news is that from there, it is all downhill with very cold temperatures on the horizon.

For Friday, we will have partly sunny to mostly cloudy skies above. High temperatures should top out right near the average of 45 degrees for the date. Winds will be breezy, particularly this afternoon, so it probably won’t feel that warm. Tonight, skies will be partly cloudy with lows around 20 degrees.

Saturday is going to see colder air drawn in from the north. This will result in highs that likely fail to reach the freezing mark. We do see a bit of a chance for some freezing drizzle / light snow in the afternoon and evening but it isn’t expected to amount to much, if anything. Saturday night, a few flurries may be seen and lows will be dropping well into the single digits.

Sunday is when the cold begins to make itself felt. Cloudy skies will be above and high temperatures will only be in the teens. Sunday night, some light snow may be seen and lows will be dropping to below zero.

Be sure to do what you can to prepare for the cold and be careful if you venture out once the worst of it hits. Have a good weekend!

Join the Discussion - Post your commentJoin the Discussion!

Thursday in Thornton sees the sun return but, with some breezy winds

Thursday, January 26th, 2023 4:55am MDT

A bit of an improvement in the weather for today as we finally see fewer clouds and temperatures warm slightly. There will, however, also be some wind.

Mostly sunny to sunny skies will be above through the daytime hours. High temperatures will climb to the mid to upper 30s. That is still cooler than normal but at least some improvement. Winds will be light this morning then become pretty breezy in the afternoon.

Tonight, winds remain breezy for most of the period. Cloud cover will increase and we will see overnight lows in the low 20s.

Join the Discussion - Post your commentJoin the Discussion!