Thornton, Colorado, USA
UpdatedMon, 23-Apr-2018 8:30pm 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

Hurricane Maria stripped Puerto Rico’s forests bare, work begins to replenish them

Wednesday, February 28th, 2018 10:17am MDT

When Hurricane Maria tore through Puerto Rico last September, the physical destruction was not limited to houses, buildings, the electricity grid and other infrastructure. The storm also toppled or stripped bare an estimated 480 million trees, or a third of all the forests. » Click here to read the rest of Hurricane Maria stripped Puerto Rico’s forests bare, work begins to replenish them

Join the Discussion - Post your commentJoin the Discussion!

Wednesday to bring cooler temps, a few more clouds

Wednesday, February 28th, 2018 5:05am MDT

A system passing to our north is going to mix things up just slightly today. More clouds and temperatures cooler than normal will be the main features.

The day starts with mostly sunny skies and then in the afternoon we begin to see coverage increase a bit. Winds will be light and out of the northwest initially then this afternoon they shift to come from the northeast and become just a bit breezy. Temperatures will top out in the low to mid-40s.

Tonight, partly clear skies will be above with lows dipping into the teens.

Join the Discussion - Post your commentJoin the Discussion!

Sunny, calm, seasonal conditions for Tuesday

Tuesday, February 27th, 2018 5:04am MDT

A very nice looking day ahead here in Thornton. We will see plenty of sun with calm conditions and temperatures at or just above normal.

The day starts with sunny skies and while the afternoon will bring a few clouds, they won’t be intrusive. Winds will be light, overall conditions calm and dry. Temperatures will climb toward a high in the low 50s.

Tonight, partly cloudy skies will be above with overnight lows in the low 20s.

Live weather gauges here.

Join the Discussion - Post your commentJoin the Discussion!

Thornton’s workweek starts with seasonal temps, lots of sun

Monday, February 26th, 2018 4:57am MDT

We are finally set to break out of the big chill that kept temperatures below normal for a week. Monday will bring us temps right near normal and offer plenty of sun.

Sunny skies start things off and we will see more of the same throughout the day. Winds will be light and out of the southwest, a welcome change from the blustery conditions this past weekend. Temperatures start out cold but then will warm to a high in the upper 40s.

Tonight, skies remain clear with overnight lows to the upper teens.

The balance of your week will remain dry with temperatures not far off average through Thursday. We then should see a nice warmup Friday and Saturday. More in the extended forecast here.

Join the Discussion - Post your commentJoin the Discussion!

Snow falls in Rome as Europe hit by icy weather

Monday, February 26th, 2018 4:34am MDT

Rome woke to its first snowfall in six years on Monday as chilling winds from Siberia swept across Europe, bringing freezing temperatures that have claimed at least four lives, closed schools … » Click here to read the rest of Snow falls in Rome as Europe hit by icy weather

Join the Discussion - Post your commentJoin the Discussion!

February 2018 top shots: Monthly photo slideshow

Sunday, February 25th, 2018 4:00pm MDT
Thornton residents turned out to support law enforcement and honor Adams County Sheriff's Deputy Heath Gumm. (Patrick Martin)

Thornton residents turned out to support law enforcement and honor Adams County Sheriff’s Deputy Heath Gumm. (Patrick Martin)

February signifies the start of the climb toward warmer temperatures for the year.  Cold and snow though do intrude but, coupled with milder conditions, there are lots of photo opportunities as can be seen in our monthly slideshow.

The month is one of our least snowiest of the year but it isn’t unusual to see the landscape blanketed in white.  Warming temperatures through the month can bring the onset of spring fever and gives residents the opportunity to enjoy some prolonged time outdoors on the mild days.

Cold or mild, snowy or dry, our scenery is almost always gorgeous – and photo worthy.

  • Slideshow updated February 20, 2018
  • 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!

February 25 to March 3: This week in Denver weather history

Sunday, February 25th, 2018 1:00am MDT
This week in Denver weather history

February 25 to March 3: This week in Denver weather history

In the past week Denver has seen its fair share of wind and snow and looking back at this week in Denver weather history, we see both are common conditions.

From the National Weather Service:


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.


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.


In 1971…a wind gust to 100 mph was recorded in Boulder at the National Center for Atmospheric Research. The cold west winds gusted to 53 mph in downtown Boulder. No damage was reported. Northwest winds gusted to 31 mph on the 25th and to 38 mph on the 26th at Stapleton International Airport.

In 1984…a heavy snow storm left 1 to 2 feet of new snow in the foothills west of Denver. I-70 was closed…stranding skiers returning from the mountains. Most had to spend several hours in Idaho Springs. The snow spread over metro Denver with 9 inches at Littleton…Castle Rock…and Boulder and up to 5 inches in Aurora and Denver. Snowfall totaled only 3.6 inches at Stapleton International Airport where north winds gusted to 31 mph.


In 1884…heavy snowfall totaled 6.0 inches in downtown Denver.

In 1908…a duststorm occurred in the city during the afternoon. Northwest winds were sustained from 14 to 24 mph.

In 1918…pre-frontal Chinook winds from the southwest… Sustained to 43 mph with a maximum velocity to 52 mph… Warmed temperatures to a high of 62 degrees.

In 1954…strong Chinook winds gusting to 52 mph during the morning warmed the temperature in Denver to a balmy 65 degrees by early afternoon. A vigorous Canadian cold front during the late afternoon produced north winds at sustained speeds of 52 mph with gusts as high as 65 mph and billows of blowing dust…which reduced the visibility to as low as 1 mile at Stapleton Airport. Showers left half an inch of snow on the ground as the temperature dipped to a low of 27 degrees before midnight.

In 1989…a brief rain shower produced a microburst wind gust to 51 mph at Stapleton International Airport.

In 1997…snowfall totaled 4 to 6 inches in and near the foothills. Only 0.8 inch of snow fell at the site of the former Stapleton International Airport. Northeast winds gusted to 29 mph at Denver International Airport.

In 2013…a storm system produced heavy snow in the Front Range Foothills. Storm totals included: 12 inches near Black Mountain and Pine Junction…10 inches near Conifer and Nederland; 9 inches…12 miles northwest of Golden; 8 inches near Evergreen…with 6 inches near Eldorado Springs. Snow and blowing snow produced blizzard conditions along and south of the Interstate 70 corridor…just east of Denver.  Storm totals generally ranged from 3 to 7 inches. North winds of 25 to 30 mph were reported with gusts around 40 mph. Roads became impassable as snow and blowing snow produced 3 to 4 ft snow drifts. Interstate 70 was closed from Aurora to the Kansas state line. At Denver International Airport…a peak wind gust to 31 mph was reported along with 1.0 inch of snow.


In 1893…heavy snowfall totaled 7.9 inches in downtown Denver. Most of the snow…6.7 inches…fell on the 27th. Northeast winds were sustained to 18 mph with gusts to 30 mph behind an apparent cold front.

In 1939…heavy snowfall of 8.1 inches was the heaviest of the month in downtown Denver. North winds sustained to 21 mph on the 26th and to 28 mph on the 27th caused much drifting. The greatest snow depth on the ground was 7.8 inches at noon on the 27th.

In 1987…a snowstorm dropped 4 to 8 inches of snow across metro Denver…causing flight delays at Stapleton International Airport where snowfall totaled 3.8 inches and north winds gusted to 24 mph. Both I-70 and I-25 were closed for a time to the east and south of Denver.


In 1896…northwest winds were sustained to 46 mph with gusts to 58 mph.

In 1902…northwest winds were sustained to 50 mph with gusts as high as 60 mph. The high temperature was 44 degrees.

In 1918…a post-frontal heavy snow storm developed over downtown Denver. Snowfall totaled 8.4 inches and north winds were sustained to 30 mph with a maximum velocity to 32 mph.

In 1963…west winds gusted to 55 mph at Stapleton Airport.

In 1974…a wind gust to 99 mph was recorded in Boulder. West winds gusted to 43 mph at Stapleton International Airport.

In 2009…a strong wind gusts blew a trailer in the path of two vehicles along State Highway 36…between Boulder and Lyons. The two vehicles were in the northbound lane when a wind gust blew a fifth-wheel trailer into their path… As it approached from the opposite lane. The trailer left the road surface…and collided with the top left side of the first car; causing extensive damage. A van following the first vehicle then struck the trailer. The driver of the van suffered facial injuries.


In 1918…heavy snowfall totaled 9.6 inches in downtown Denver. Most of the snow…8.4 inches…fell on the 27th.

In 1931…a major winter storm dumped 12.0 inches of heavy snowfall over downtown Denver. This is the greatest 24 hour snowfall ever recorded during the month of February. North winds gusted to 18 mph on the 28th.

In 2006…a warm spell resulted in 3 temperature records. The high temperature of 73 degrees on the 27th equaled the record high for the date. High temperature of 77 degrees on the 28th was a record high for the date and equaled the all time record high temperature for February first set on February 4…1890.


In 1896…northwest winds were sustained to 54 mph with gusts to 65 mph. The winds warmed the temperature to a high of 56 degrees. This was the second consecutive day of strong winds in the city.

In 1958…at Stapleton Airport…snowfall totaled 5.3 inches and northeast winds gusted to 24 mph.


In 2012…another round of high winds occurred along the Front Range Foothills. Peak wind gusts included: 84 mph at the National Wind Technology Center; 77 mph…3 miles south-southwest of Boulder; and 75 mph…3 miles southwest of Rocky Flats. At Denver International Airport…west winds gusted to 36 mph on the 28th and 35 mph on the 29th.


In 1875…6 inches of snow fell from 3:15 pm on the 28th to 1:00 am on the 1st. Precipitation for the two days was 0.50 inch.

» Click here to read the rest of February 25 to March 3: This week in Denver weather history

Join the Discussion - Post your commentJoin the Discussion!

Light snow Friday to give way to a dry but chilly weekend

Friday, February 23rd, 2018 6:10am MDT

Not a lot of relief in the immediate future for those that are getting tired of the recent string of cold days. The three day period starts out with a decent chance for light snow and while the weekend will be dry, it will be chilly.

In some ways Friday looks to be much like yesterday. The morning should be calm with mostly cloudy skies above. The afternoon and evening will bring a good chance for some light snow. We’re not expecting much, maybe an inch or so, but if convective showers setup like they did yesterday it could be more. Highs today will remain below the freezing mark.

Overnight tonight skies will clear and low temperatures will be well into the teens.

Saturday promises a return of the sun but it won’t help much with the temperatures as cold air is expected to remain stubbornly in place. Look for mostly sunny skies to be above with highs in the mid-30s. Some breezy, downslope winds can be expected.

Saturday night into Sunday morning, partly clear skies will be above with lows again dipping into the teens.

The weekend closes out with some, minor improvement in temperatures. Mostly sunny skies will be above with highs coming near the 40 degree mark.

Have a great weekend!

Join the Discussion - Post your commentJoin the Discussion!

Thornton’s Thursday weather to offer chilly temps, slight chance for snow

Thursday, February 22nd, 2018 5:07am MDT

Another front moves through Colorado today bringing a somewhat unsettled day. Temperatures remain on the cold side and we will see a few flakes of snow but nothing that will amount to much.

Mostly cloudy skies start things off and we can expect a well-obscured sky throughout the day. Temperatures start out cold and near the single digits then will gradually warm toward a high in the mid-20s.

As for snow, some light stuff will be possible throughout the day and into the first part of the evening. Little accumulation, if any at all, is expected.

Tonight, some clearing can be expected although there will still be a good bit of lingering cloud cover. Overnight low temperatures will dip to near the 10 degree mark.

Want a preview of the coming weekend’s weather? Check here.

Join the Discussion - Post your commentJoin the Discussion!

Denver sets record low temperature for February 21

Wednesday, February 21st, 2018 5:09am MDT

Record Cold TemperaturesIn the wake of our most recent storm system, we have seen some exceedingly cold temperatures and the proof is the mercury readings this morning that set a record.

Denver’s official low temperature, as measured at Denver International Airport, dropped to 7 degrees below 0 this morning.

This easily beats the record low temperature for today’s date of -2 degrees set in 1955.  Additionally, the record is the first record low recorded in the Mile High City since December 17, 2016.

Here in Thornton, we were not quite as cold with a low of -4 degrees coming at 5:51am.  This is also Thornton’s coldest temperature reading of the season.

This morning’s cold followed on another record yesterday where Denver saw its coldest maximum temperature for February 20.

While it will remain quite cold today, we will thankfully see some improvement in those mercury readings (although not a lot).  Additionally, long range forecasts portend colder than normal conditions are likely in the extended period.

  • Stay up to date with Thornton’s weather: ‘Like’ us on Facebook, follow us on Twitterand add us to your Google+ circles
Join the Discussion - Post your commentJoin the Discussion!