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Thornton, Colorado, USA
UpdatedSun, 19-May-2019 4:40am MDT 
 

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Unseasonably warm temperatures, calm and dry conditions for Thornton’s weekend

Friday, December 14th, 2018 4:56am MDT

The month started out on the cold side but now we are entering a period of much warmer temperatures. Above normal readings will be seen not only this weekend but through next week as well.

For today, sunny skies will be above throughout. Highs today will top out in the low to mid-50s, well above the average high for the date of 42 degrees. Tonight, mostly clear skies will be above with clouds increasing before dawn. Lows will dip to the mid-20s.

Saturday will see warmer temperatures but with more clouds. Partly sunny skies will be above as we see highs in the mid-60s. Saturday night into Sunday morning, mostly clear skies will be above with lows again in the mid-20s.

The weekend closes out quite nicely on Sunday with sunny skies returning. Highs will be in the mid-50s.

Hopefully you can get out and enjoy this nice weather!

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Thornton’s Thursday to offer lots of sun, temps near normal

Thursday, December 13th, 2018 4:54am MDT

A calmer day of weather for us as winds finally will subside. In their place we will have sunny skies and temps right where you would expect for this time of year.

A few clouds may be around early but those will soon move out leaving us sunny skies for most of the day. Winds may be a bit breezy in the pre-dawn hour but then quickly settle down and become calm. Highs today will top out close to the average high for the date of 42 degrees.

Tonight, mostly clear skies will be above with lows in the low 20s.

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Cold front to cool things down, offer up a decent a bit of wind Wednesday

Wednesday, December 12th, 2018 5:07am MDT

An approaching cold front will mix things up for us a bit today. Temperatures will remain above normal, but a good bit cooler than yesterday, and blustery winds will be a big part of the day.

Skies start off partly clear then will see a steady increase in coverage. Mostly cloudy skies will be dominant from mid-morning on. High temperatures today will top out near the 50 degree mark.

As for the wind, look for them to begin picking up before noon then continue to increase into the evening. It won’t be until the pre-dawn hours tomorrow that they will settle down.

Tonight, skies will clear gradually with wind ongoing. Lows will be to near 20 degrees.

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December 9 to December 15: This week in Denver weather history

Wednesday, December 12th, 2018 3:40am MDT
This week in Denver weather history

December 9 to December 15: This week in Denver weather history

Heavy snow and damaging wind are at the forefront of our look back at this week in Denver weather history.

From the National Weather Service:

2-17

In 1939…more than 2 weeks of unseasonably warm weather made the month the 3rd warmest on record. Seven daily temperature records were set…including the all-time record high temperature for the month of 79 degrees on the 5th. Daytime highs were balmy with 14 days in the 60’s and 70’s. Low temperatures dipped to freezing or below on only 5 days. The period was dry with only a trace of snow on the 12th.

3-15

In 1972…a protracted cold spell held an icy grip on metro Denver when maximum temperatures never reached above freezing for 10 consecutive days from the 3rd through the 12th and minimum temperatures dipped below zero on eleven consecutive days from the 5th through the 15th. Daily low temperature records were set with 15 degrees below zero on the 5th…17 degrees below zero on the 6th… And 18 degrees below zero on the 10th. Daily record low maximum readings were set with 3 degrees on the 6th and 6 degrees on the 9th. The very cold temperatures were caused by 3 to 5 inches of snow cover and a Canadian air mass.

7-9

In 1919…an apparent arctic cold front brought extreme cold and light snow to the city. Snowfall totaled only 2.5 inches on the 7th and 8th. Temperatures dipped to lows of 14 degrees below zero on the 8th and to 20 degrees below zero on the 9th. Both readings were daily record minimums. High temperatures were only 4 degrees on the 8th and 7 degrees on the 9th.

In 1923…a major storm dumped 13.5 inches of snowfall on downtown Denver. The apparent post-frontal snowfall started during the late afternoon of the 7th and continued through the evening of the 9th. Temperatures dipped from a high of 66 degrees on the 7th with west winds sustained to 35 mph to a low of only 14 degrees on the 9th…with north winds sustained to 25 mph.

8-9

In 1943…4.5 inches of snow fell in downtown Denver. This was the only measurable snow of the month. North winds were sustained to 26 mph on the 8th.

In 2003…snowfall totaled 3 to 6 inches across metro Denver. Snowfall was heavier in and near the foothills with 8.0 inches measured in Boulder and 10 miles southwest of Sedalia. Snowfall was 3.9 inches at the site of the former Stapleton International Airport. Most of the snow fell on the 8th…as the snow ended shortly after midnight. North winds gusted to 29 mph at Denver International Airport.

In 2008…an upslope snowstorm produced heavy snow in and near the foothills of Boulder…Jefferson and Douglas counties… And along the palmer divide south of Denver. Storm totals in the foothills ranged from 8 to 15 inches. In Boulder and in areas west and south of Denver…storm totals ranged from 6 to 13 inches. The snowfall measurement at Denver International Airport was 3.9 inches.

8-10

In 1985 a slow moving storm dumped 10 to 20 inches of snow over the northeast plains…closing schools and businesses in many areas along the Front Range north of Denver. At Stapleton International Airport…snowfall totaled 9.9 inches with a maximum snow depth of 7 inches on the ground. North winds gusted to 24 mph. The snow caused long air traffic delays at Stapleton International Airport on the 9th.

In 1997…persistent light to moderate snowfall combined with strong and gusty northerly winds to produce much blowing and drifting snow across metro Denver. The hardest hit areas were south of Denver where north winds at speeds of 20 to 35 mph with gusts to 45 mph caused near whiteout conditions. The strong winds produced drifts 2 to 4 feet deep and dropped wind chill temperatures well below zero. Sections of both I-25 and I-70 and other roads were closed as travel became impossible due to blowing snow. Numerous traffic accidents were reported and a handful of people were stranded during the snowstorm. Snowfall totals included: 22 inches at Conifer…13 inches at Castle Rock…12 inches at Parker…and 8 inches in southeast Aurora. Snowfall totaled 5.5 inches at the site of the former Stapleton International Airport. North winds gusted to 36 mph at Denver International Airport on the 10th.

8-12

In 1932…the second longest sub-zero period on record in Denver occurred. The temperature fell below zero shortly after 1:00 pm on the 8th and remained below zero for 92 hours until 9:00 am on the 12th. The lowest temperature recorded during this period was 13 degrees below zero on both the 9th and 11th. That temperature on the 11th was a record low for the date. High temperatures of 4 on the 8th…5 below zero on the 9th…1 below zero on the 10th… And 6 below zero on the 11th were record low maximum temperatures for those dates. Light north winds at 5 to 10 mph were accompanied by occasional light snow…which totaled only 2.2 inches.

9

In 1898…the very cold air mass that settled over the city behind an apparent cold front on the 7th plunged temperatures to a low of 20 degrees below zero. The high temperature climbed to only 5 degrees.

In 1910…Chinook west winds sustained to 46 mph warmed the temperature to 60 degrees…the warmest reading of the month that year.

In 1919…the minimum temperature dipped to 20 degrees below zero in downtown Denver…setting a record low for the date.

In 1984…high winds occurred in the foothills with a gust to 69 mph recorded at Golden Gate Canyon west of Denver. West winds gusted to 36 mph at Stapleton International Airport.

In 1992…high winds were recorded over most of the day in the Front Range foothills. Wind gusts to 95 mph were measured in the Table Mesa area of Boulder. Northwest winds gusted to 43 mph at Stapleton International Airport.

In 1993…a weather observer in Boulder recorded a wind gust to 73 mph. North winds gusted to 37 mph at Stapleton International Airport.

In 1998…metro Denver and areas in the foothills received the first significant snowfall in more than a month. The upslope snow event deposited up to 17 inches in the foothills with generally 4 to 8 inches across metro Denver west of I-25. Snowfall totals included 17 inches at crescent park and 16 inches in nearby Coal Creek Canyon. Other snow amounts included: 16 inches at Tiny Town; 14 inches at Chief Hosa…Evergreen…and Genesee; 13 inches in Conifer; 12 inches at Nederland; 11 inches in Eldorado Canyon; 9 inches just west of Boulder; 8 inches in Boulder; and 7 inches in Broomfield and Golden. Only 3.6 inches of snow fell at the site of the former Stapleton International Airport. Northeast winds gusted to 26 mph at Denver International Airport.

9-13

In 1961…cold arctic air produced a protracted cold period. The temperature plunged to 16 degrees below zero on the 10th…establishing a new record for the date and the coldest reading since 25 degrees below zero on February 1… 1951. Low temperatures dipped below zero on 5 consecutive days with 9 degrees below zero on the 9th…16 below on the 10th…10 below on the 11th…and 12 below on both the 12th and 13th. High temperatures reached only 3 degrees on the 10th and 6 degrees on the 11th.

10

In 1953…snowfall totaled 3.8 inches at Stapleton Airport where northeast winds were sustained at speeds to 47 mph and gusted to 60 mph behind a cold front.

In 1969…sustained winds of 30 mph with gusts to 55 mph in downtown Boulder caused minor damage. Northwest winds gusted to 39 mph at Stapleton International Airport.

In 1980…winds to 60 mph whistled through Boulder.

In 1987…strong winds in the foothills spread over northern portions of metro Denver. Wind gusts of 60 to 75 mph were common in Boulder and southwestern weld counties. However… The highest reported wind gust…94 mph…occurred near Rollinsville. A northwest wind gust to 36 mph was recorded at Stapleton International Airport.

» Click here to read the rest of December 9 to December 15: This week in Denver weather history

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Mild temperatures, breezy winds for Thornton’s Tuesday

Tuesday, December 11th, 2018 5:10am MDT

A passing front today will not affect our temperatures but it will offer us up some breezy winds.

The day starts with some cloud cover but that will ease this morning leading to mostly sunny skies in the afternoon. Temperatures will again be warmer than normal with highs in the mid-50s.

Look for the winds to start picking up by mid-morning, peaking by mid-afternoon before tapering off quickly. At their height, gusts to 30mph may be possible Tonight, partly clear skies will be above with lows to the upper 20s.

Keep an eye on the temps and wind with our live gauges here.

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Thornton’s workweek starts off with unseasonably warm temps, increasing clouds

Monday, December 10th, 2018 5:05am MDT

Overall temperatures thus far this month have tended to be below normal. Today we see a change that will bring warmer than normal mercury readings that should last through the week and into the weekend.

Today starts out with clear skies but high clouds will develop by mid-morning and increase in coverage. By late afternoon, skies will be partly clear.

Temperatures start out on the cold side but then will warm quickly and head toward a high in the mid-50s before cooling down in the mid-afternoon.

Tonight, skies will be mostly cloudy with lows a bit below freezing.

Looking ahead, high pressure is going to reign and should keep us mild and dry for the foreseeable future. Have a look at the entended weather forecast for more.

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Thornton to enjoy a weekend with near normal temps, calm and dry conditions

Friday, December 7th, 2018 5:04am MDT

High pressure is going to be dominant over the three-day period. That will lead to days with lots of sun and temperatures staying relatively close to normal.

For Friday, a few clouds will be around but not a tremendous amount. Temperatures will top out around 41 degrees, a couple short of average for the date. Tonight, partly clear skies will be above with lows near 20 degrees.

Saturday will be the warmest day of the period with highs in the mid to upper 40s. Look for sunny skies with calm conditions. Saturday night into Sunday morning, skies will be mostly clear with lows dipping to the low 20s.

Sunday closes out the weekend in fine fashion with lots of sun and conditions remaining calm. Highs will be the mid-40s.

Have a great weekend!

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Thornton’s Thursday to offer cold temps, a good bit of cloud cover

Thursday, December 6th, 2018 5:09am MDT

Cold air filtering down from the northwest will be a driving factor in our weather today. That will keep things chilly and moisture aloft will give us some clouds throughout the day.

We start off with mostly cloudy skies then should see some easing in the coverage before it builds again in mid to late afternoon. Temperatures today will struggle to even reach the freezing mark.

Tonight, skies will be mostly cloudy with lows near 20 degrees.

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Increased moisture above leads to more clouds Wednesday, temps remain chilly

Wednesday, December 5th, 2018 5:18am MDT

With a good bit of upper level moisture streaming in from the west, clouds will be more present today than yesterday. Temperatures will be similar, remaining chilly and a bit below normal.

Partly clear skies start things off but cloud cover will increase steadily throughout the day. Overall, mostly cloudy will be rule.

Temperatures start out quite cold then will warm toward an early afternoon high in the low 40s before starting their descent.

Tonight, mostly cloudy skies will be above and lows will dip into the teens.

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Lots of sun, chilly temps for Thornton’s Tuesday

Tuesday, December 4th, 2018 5:00am MDT

A pretty nice, late fall day ahead for us. Sunny skies above will be the rule but temps will be a bit below normal.

Clear skies start us off this morning and will continue through the day with nary a cloud to be seen throughout. Overall conditions will be calm and dry. Temperatures will top out near the 40 degree mark, a few degrees below normal.

Tonight, skies will be mostly clear with lows down to the mid-teens.

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