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Thornton, Colorado, USA
UpdatedThu, 20-Jan-2022 7:50am MST 
 

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Following a cold start to the day, Thursday will see lots of sun, temps remain cool

Thursday, January 20th, 2022 4:57am MST

Some ice lingers on the roads early this morning and temperatures are on the cold side. Conditions will be improving though with a good bit of sun on tap and temps rebounding a bit.

Certainly, if you venture out early this morning, do be careful. Less traveled roads, sidewalks and overpasses will have some lingering ice on them.

The day will start off with some cloud cover but it will quickly ease and there will be plenty of blue above by mid-morning. Temperatures will top out around the 40 degree mark, cooler than average but an improvement over yesterday. Overall conditions will be calm and dry.

Tonight, cloud cover will be increasing as our next storm system works its way closer. Overnight lows will be around 20 degrees.

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January 2022 top shots: Monthly photo slideshow

Wednesday, January 19th, 2022 6:09pm MST
A much needed snowfall covers yard art in Thornton on New Year's Day. (ThorntonWeather.com)

A much needed snowfall covers yard art in Thornton on New Year’s Day. (ThorntonWeather.com)

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 18, 2022
  • 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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Wednesday sees a turn toward colder temps, a chance for precipitation

Wednesday, January 19th, 2022 5:03am MST

A bit of a break from the relatively mild weather of recent days for Thornton. Today temps drop considerably and we may see some freezing drizzle and light snow.

Cloudy skies will be with us throughout the daytime hours today. High temperatures will stay below freezing. Some breezy winds will be seen in the afternoon.

Some freezing drizzle will be possible this morning then potentially some light snow. There isn’t a lot of moisture so any precipitation will be light. A Winter Weather Advisory is in effect until 8:00pm as should we get the drizzle, roads could become very slick quickly.

Tonight, any precipitation will end before midnight, then skies will begin to clear. Overnight lows will be into the teens.

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January 16 to January 22: This week in Denver weather history

Wednesday, January 19th, 2022 4:54am MST

This Week in Denver Weather History

Our look back at this week in Denver weather history carries with it one overriding condition – wind.  In January it is not uncommon for us to experience Chinook winds which are a blessing and a curse.  These winds bring warm temperatures which are welcome in our coldest month of the year.  However they also can run at extraordinary speeds and at their worst cause a great deal of damage.

13-16

In 1888…a cold air mass settled over the city and caused temperatures to plunge well below zero on four consecutive days…but only one temperature record was set.  Minimum temperatures dipped to 4 degrees below zero on the 13th… 19 degrees below zero on the 14th…20 degrees below zero on the 15th…and 11 degrees below zero on the 16th.  The maximum temperature of only 4 degrees below zero on the 14th was a record low maximum for the date.  North winds were sustained to 30 mph on the 13th.

14-21

In 1930…a protracted cold spell occurred when low temperatures plunged below zero on 8 consecutive days.  The coldest low temperatures of 20 degrees below zero on the 17th and 19 degrees below zero on the 16th were record minimums for the dates.  High temperatures during the period ranged from 18 on the 18th to zero on the 20th.  Two degrees on the 15th was a record low maximum temperature for the date.

15-16

In 1967…a major windstorm struck Boulder.  The storm was described at the time as the worst single windstorm in the history of Boulder in terms of damage.  Winds reached 125 mph at the National Center for Atmospheric Research and at Boulder airport.  Winds gusted to 84 mph downtown.  Damage totaled a half million dollars in Boulder where some minor injuries were reported.  At the Boulder municipal airport… 14 light airplanes were severely damaged.  The second floor of a warehouse was blown down…damaging two nearby moving vans.  A mobile home was blown over south of Boulder… Injuring one woman.  The roof of a department store was blown in.  There was widespread damage to houses…autos… And power lines from wind and flying debris.  Strong winds also occurred in Denver and Golden…but damage was only minor.  At Stapleton International Airport…west winds gusted to 43 mph on the 15th and to 45 mph on the 16th.

In 1981…heavy snow of 6 to 10 inches accumulated across metro Denver.  Snowfall totaled only 1.8 inches at Stapleton International Airport where east winds gusted to 21 mph on the 15th.

In 1991…a Pacific storm system moved across metro Denver. Snowfall totaled 3 to 7 inches with 3 inches in Aurora… Denver…and Castle Rock…4 inches in Arvada…and 7 inches at South Platte station just southwest of Denver. Snowfall totaled only 2.9 inches at Stapleton International Airport where north winds gusted to 21 mph on the 16th.

In 2001…heavy snow fell across the Front Range foothills and urban corridor.  The combination of careless driving and snowpacked highways resulted in 3 multi-vehicle accidents involving 30 vehicles…along I-25 in Douglas County.  Eleven people were injured and one was killed. Snow amounts included:  11 inches in Evergreen; 10 inches at Eldorado Springs and Genesee; 8 inches at Broomfield… Ken Caryl Ranch…and Thornton; and 5 to 7 inches in Arvada…Bailey…Crow Hill…Gross Reservoir…Lakewood… Louisville…Westminster…and near Loveland.  Snowfall totaled 2.7 inches at the site of the former Stapleton International Airport.

15-23

In 1962…a protracted cold spell kept metro Denver in the deep freeze for more than a week.  From the 15th thru the 23rd…low temperatures were zero or below for 9 consecutive days…but a daily record low was set only on the 22nd when the temperature dipped to 14 degrees below zero.  A record low maximum for the date was also set on the 22nd when the temperature climbed to only 11 degrees.  The coldest high temperature was 3 degrees above zero on the 21st…which did not break the record.  The protracted cold was broken for only a few hours on the afternoon of the 20th when Chinook winds warmed the temperature to a high of 38 degrees before another surge of cold arctic air plunged temperatures back into the deep freeze that evening.  The severe cold caused much damage to water systems.  A woman was frozen to death at Morrison.  There were other deaths attributable to the weather…including traffic deaths and heart attacks from overexertion.

16

In 1911…a trace of rain fell…a rare event in January.

In 1935…rainfall was 0.01 inch during the afternoon…a rare event in January.

In 1989…wind gusts to 80 mph were reported in southwest Boulder.  Winds reached 100 mph at Rollinsville in the foothills southwest of Boulder.  In Golden…the wind blew a 25-foot trailer through a fence and flipped it over. West winds gusted to 37 mph at Stapleton International Airport where the Chinook winds warmed the temperature to a high of 49 degrees.

16-17

In 1886…a brief cold spell resulted in two temperature records.  High temperatures of zero degrees on the 16th and 2 degrees below zero on the 17th were both record low maximums for the dates.  Low temperatures of 8 degrees below zero on the 16th and 16 degrees below zero on the 17th were not records.

In 1930…temperatures plunging well below zero resulted in two records.  Low temperatures of 19 degrees below zero on the 16th and 20 degrees below zero on the 17th were record low temperatures for the dates.  High temperatures were 4 degrees on the 16th and 15 degrees on the 17th.  Light snowfall totaled 4.0 inches.  North winds were sustained to 18 mph on the 16th.

In 1964…high winds struck the eastern foothills.  Gale velocity winds were recorded in Boulder with gusts to 83 mph measured at Rocky Flats.  Several airplanes were damaged at the Jefferson County Airport in Broomfield. Roofs…walls…and parts of buildings were blown away at various locations.  Power poles and trees were blown over.

16-18

In 1943…light snowfall totaled 3.2 inches over the 3 days. This was the only measurable snow of the month.  North winds were sustained to 20 mph on the 16th.

In 2011…very strong winds associated with an upper level jetstream over Colorado produced blizzard conditions in the mountains above timberline. Peak wind gusts included: 99 mph atop Loveland Pass…94 mph…2 miles southwest of Mary Jane…80 mph atop Berthoud Pass and 79 mph atop Niwot Ridge. Storm totals in the ski areas west of Denver ranged from 8 to 14 inches.

17

In 1872…light snow fell during the morning and continued into the afternoon until 3:30 pm.  The sky commenced to clear a little before 2:00 pm…but snow fell thickly for at least half an hour even though the sky was perfectly clear overhead.  Melted snow totaled 0.33 inches.

In 1888…northwest winds were sustained to 46 mph in the city.

In 1905…intermittent rain…unusual in January…occurred during the day.  The rain changed to snow during the late evening…but ended before midnight.  Snowfall was 2.0 inches. Precipitation totaled 0.62 inch.  The temperature ranged from a high of 44 degrees to a low of 32 degrees.

In 1950…wind gusts to 62 mph caused some blowing dust at Stapleton Airport.

In 1982…one of the worst wind storms in many years hit the Front Range foothills.  The strongest winds occurred in Boulder where at 2:30 am a wind gust to 147 mph was recorded at the National Center for Atmospheric Research…on the mesa in southwest Boulder.  At this location 20 wind gusts over 120 mph were clocked between 1:00 am and 9:00 am.  An estimated 40 percent of all buildings in Boulder received at least minor wind damage.  About 50 homes were damaged enough to be uninhabitable.  At least 15 homes in the Table Mesa area of Boulder lost roofs.  Twenty small airplanes were destroyed at the Boulder airport.  Utility poles were snapped in two…and about one-seventh of the buildings in the area were without power.  Insured damage totaled 20 million dollars making the wind storm the most costly on record in Colorado at the time.

In 1989…high winds were recorded along the eastern foothills with gusts to 90 mph recorded at Rollinsville.  North of Denver on I-25…the wind injured two men when their tractor trailer was blown off the road and rolled.  West winds gusted to 48 mph at Stapleton International Airport.

In 1990…an intense but localized snow storm caught many people by surprise when it dumped 3 to 6 inches of snow during a 3-hour period across portions of Boulder County. The storm swath approximately 20 to 30 miles wide stretched northeast from Boulder to just east of Longmont.  Only light snow fell over the remainder of metro Denver with 0.2 inch of snowfall measured at Stapleton International Airport where northeast winds gusted to 30 mph.

In 1998…strong winds in the foothills spread over the plains mainly north of metro Denver.  Winds gusted to 75 mph at Golden Gate Canyon.  West winds gusted to 34 mph at Denver International Airport.

» Click here to read the rest of January 16 to January 22: This week in Denver weather history

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Thornton to enjoy one more mild day Tuesday but with some cloud cover

Tuesday, January 18th, 2022 5:01am MST

Enjoy today’s mild temperatures as going forward things turn colder. Tonight and tomorrow may bring freezing rain and drizzle and tomorrow will certainly be colder.

For today, partly clear skies will be above throughout. Conditions will be calm other than some breezy north winds in the afternoon. High temperatures will top out in the mid-50s.

Tonight, cloud cover will be increasing as a cold front moves in. Early morning hours tomorrow may bring some areas of freezing drizzle potentially making things slick before dawn. Overnight lows tonight drop to the low 20s.

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A mild Monday starts off Thornton’s workweek

Monday, January 17th, 2022 4:53am MST

This is a fine way to celebrate Martin Luther King Jr. Day. We will enjoy a good dose of sun, calm conditions and temperatures well above normal.

The day starts with clear skies then a few clouds will begin to appear through the day but should not become too intrusive. High temperatures will top out around 60 degrees, well above the 45 degree high average for the date. Overall conditions will be calm and dry.

Tonight, cloud cover will slowly increase leading to partly clear skies. Overnight lows will be in the mid to upper 20s.

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Thornton’s weekend starts out chilly & breezy, then clears out and warms up

Friday, January 14th, 2022 5:00am MST

The three-day period starts out with a change from the recent mild weather offering colder temps, wind and perhaps just a touch of precipitation. After today though, conditions calm down and warm up.

For Friday, we will see some sun early then cloud cover will be increasing. With the increase in clouds will also come increased wind speeds as it will be quite breezy for most of the day. From mid-morning to late afternoon we may see some showers / light snow. Unfortunately it is not expected to be anything notable. High temperatures will top out around 40 degrees. Tonight, winds will settle down after dark and cloud cover will decrease after midnight. Overnight lows will be well into the teens.

After a cold start, Saturday will be chilly but calm. Highs tomorrow will top out in the low to mid-40s with sunny skies above. Saturday night, partly cloudy skies will be overhead with lows in the mid-20s.

Sunday looks to be the warmest day of the period. With sunny to mostly sunny skies, highs will top out around 50 degrees.

Have a great weekend!

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One more very mild day for Thornton on Thursday

Thursday, January 13th, 2022 5:03am MST

No doubt you are enjoying the warmer-than-normal temperatures of recent days and you get one more today. Tomorrow will break the streak with colder temps and a chance for some snow.

For today, clear skies start us off and then there will be a steady, slow increase in cloud cover throughout the day. The clouds won’t have much impact on temperatures though as we look to reach a high around 60 degrees. Overall conditions will be calm and dry.

Tonight, lows will drop to a bit below freezing under mostly cloudy skies.

As for the coming cold, a weak system arrives tonight. Temperatures tomorrow will be colder than normal and the afternoon brings a chance for snow although it looks like accumulations will be minimal, if any at all. More in the extended forecast here.

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More mild temperatures, lots of sun in store for Wednesday

Wednesday, January 12th, 2022 5:08am MST

Much like the last two days, Thornton will again enjoy pleasant weather conditions today. Temps will remain above normal with plenty of blue above.

The day does start out with some cloud cover but that will be gradually easing throughout the day. Overall conditions will be calm with a light, southwest wind. High temperatures will top out in the mid to upper 50s.

Tonight, lows will drop to the mid-20s under mostly clear skies.

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Tuesday in Thornton to offer relatively mild temperatures, a good dose of sun

Tuesday, January 11th, 2022 5:07am MST

We again will enjoy a pleasant, winter day. Temperatures will be above normal and while there will be some clouds, they won’t be overly intrusive.

Mostly clear skies start us off then some additional high level clouds will build in the morning. Those will dissipate some later in the day. Temperatures will top out around 50 degrees, about 5 degrees above average for the date. Overall conditions will be calm and dry.

Tonight, skies will be mostly clear with lows dipping into the low 20s.

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