Thornton, Colorado, USA
UpdatedSat, 25-Mar-2023 7:05am MDT 


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January 1 to January 7: This Week in Denver Weather History

Wednesday, January 4th, 2023 5:29am MDT

This Week in Denver Weather History

One of our coldest and driest months, January is not normally known for its weather extremes. However just like any in Colorado, significant events can occur as we see in our look back at this week in Denver weather history.

From the National Weather Service:


In 1900…low temperatures dipped to 19 degrees below zero on both days to establish daily record minimum temperatures.

In 1975…only 4.2 inches of snow fell at Stapleton International Airport…while north of Denver a major blizzard raged. All roads north of Denver into Wyoming were closed when strong winds whipped snow into 5 to 6 foot drifts. North winds gusted to 43 mph at Stapleton International Airport on the 31st…causing some blowing snow. Freezing drizzle also fell on the 31st.

In 1984…heavy snow fell in the foothills with 8 inches at Boulder and 6 inches in southern and western metro Denver. Only 1.5 inches of snow fell overnight at Stapleton International Airport.

In 1991…a New Year’s Eve snow storm dumped 2 to 8 inches of snow across northeastern Colorado. Snowfall totaled 3.4 inches at Stapleton International Airport. The 1.9 inches of snow that fell on the 31st was the only measurable snowfall of the month.

In 2008…another brief period of high winds occurred in and near the foothills of Boulder and Jefferson counties. In Nederland…the strong wind snapped a blue spruce which landed on a nearby propane tank. Some roofs in the immediate area were damaged and power lines were downed; which left 126 residences without electricity for six hours. Peak wind gusts included 90 mph at the national wind technology center…and 89 mph; 6 miles northwest of Boulder. At Denver International Airport…a peak wind gust of 23 mph was measured from the southwest.


In 1973…the 31st marked the start of a protracted cold spell that extended into January of 1974 when temperatures dipped below zero on 7 consecutive days. Record daily minimum readings occurred on the 3rd and 5th when the temperature plunged to 17 degrees below zero on both days. A record low daily maximum temperature of only 4 degrees occurred on the 5th.


In 1941…a protracted cold spell through January 7…1942… Produced below zero low temperatures on 7 of the 8 days. A low temperature of 2 degrees on the 3rd prevented a string of 8 days below zero. The coldest days during the period were the 1st with a high of 2 degrees and a low of 9 degrees below zero…the 4th with a high of 2 degrees and a low of 11 degrees below zero…and the 5th with a high of 26 degrees and a low of 12 degrees below zero.


In 1875…the temperature fell 27 degrees between 3:00 pm and 5:00 pm. The high for the day was 43 degrees…and the low was 8 degrees. Occasional snow flurries fell during the day…but not enough to cover the ground.

In 1885…dense smoke choked the skies over downtown Denver until midday.

In 1910…a rare trace of light rain fell during the morning.

In 1911…post-frontal northeast winds were sustained to 40 mph. Only a trace of snow fell in downtown Denver.

In 1952…snowfall of 0.03 inch was the only measurable snowfall of the month and resulted in 0.01 inch of melted snow…the only precipitation of the month.

In 1956…west-northwest winds gusted to 52 mph at Stapleton Airport.

In 1996…the first snow storm of the new year dumped more than a foot of snow in the Front Range foothills with 4 to 9 inches across the western and southern sections of metro Denver. Snow totals included: 14 inches at conifer; 11 inches at Evergreen; and 10 inches at Eldora Ski Resort… West of Boulder. Snowfall totaled only 1.2 inches at the site of the former Stapleton International Airport. North- northeast winds gusted to 30 mph at Denver International Airport.

In 2003…only a trace of snow fell at the site of the former Stapleton International Airport. This…along with a trace of snow on the 22nd…was the only snow of the month…which equaled the 1934 record for the least snowiest January.


In 1896…warm Chinook winds on the 1st became cold bora winds on the 2nd. Southwest winds sustained to 60 mph with gusts as high as 66 mph warmed the temperature to a high of 55 degrees on the 1st. Northwest winds sustained to 54 mph with gusts to 60 mph resulted in snowfall of 0.3 inch and a high temperature of only 31 degrees on the 2nd.


In 1940…the first days of the month were characterized by a mixture of drizzle…light snow…and fog. Fog occurred on each day. On the 4th and 5th considerable glazing resulted from freezing drizzle. All objects were coated with a glaze on the windward side. This resulted in very slippery streets…which caused several minor traffic accidents. The glaze was not heavy enough to damage wires and cables.


In 1972…strong northwest Chinook winds in advance of a cold front gusted to 51 mph at Stapleton International Airport and caused temperatures to warm to a high of 55 degrees.

In 1986…high winds occurred along the Front Range foothills. The strongest recorded gust was 82 mph in the Table Mesa area of Boulder. Other places in Boulder reported gusts from 68 to 80 mph. West winds gusted to 43 mph at Stapleton International Airport.

In 1989…high winds between 60 and 70 mph were recorded in Boulder and along the eastern foothills. No damage was reported. West winds gusted to 49 mph at Stapleton International Airport.


In 1971…a major storm dumped a total of 8.4 inches of snow at Stapleton International Airport where north winds gusted to 23 mph.

In 1972…a strong cold front late on the 2nd produced north wind gusts to 35 mph at Stapleton International Airport. Snow…heavy at times on the 3rd…totaled 6.4 inches as temperatures hovered only in the single digits.

In 2000…heavy snow fell over the higher terrain of the palmer divide to the south of metro Denver. Snowfall totaled 7 inches 5 miles southwest of Sedalia. Only 1.5 inches of snowfall were measured at the site of the former Stapleton International Airport.


In 1949…the worst blizzard in many years struck metro Denver and all of northern Colorado. The storm produced blizzard conditions with wind gusts of 40 to 50 mph all day on the 3rd when temperatures were only in the single digits. This resulted in extremely cold wind chill temperatures of 40 to 55 degrees below zero. Stapleton Airport received 13.3 inches of snow from the storm… While downtown Denver received 11.8 inches. The snow fell for 51 consecutive hours downtown. Numerous lives were lost…and livestock losses were high across the northeastern plains of Colorado where extensive airlift operations were needed to bring supplies and food to isolated communities.


In 1959…very cold temperatures…to near zero and below…caused power and gas lines…water pipes…and automatic sprinkler systems to break. In Boulder… Merchandise and furnishings were water damaged when pipes burst in a department store…flooding three floors. The temperature was below zero for 38 consecutive hours at Stapleton Airport on the 2nd…3rd…and 4th and plunged to a low of 13 degrees below zero on the 4th. » Click here to read the rest of January 1 to January 7: This Week in Denver Weather History

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Chilly temperatures remain Wednesday but the sun stages a nice return

Wednesday, January 4th, 2023 5:03am MDT

Thornton continues its recovery from our most recent storm. Temperatures will warm, but remain on the cold side, but we will see plenty of blue above.

Early this morning there may be some patchy fog in the usual suspect areas, particularly along the South Platte River. Once that is gone, we will enjoy sunny skies for the balance of the day. High temperatures will warm a bit over recent days to the mid to upper 30s. Winds will be out of the west and relatively light.

Tonight, lows dip into the mid-teens again under mostly clear skies.

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December 2022 weather recap: Temps and snowfall come in a bit above normal

Tuesday, January 3rd, 2023 8:48am MDT
Thornton, Colorado's December 2022 Temperature Summary. (ThorntonWeather.com)

Thornton, Colorado’s December 2022 Temperature Summary. (ThorntonWeather.com)

For Thornton, December 2022’s weather was pretty much on par with what we would expect. Average mercury readings came in a bit above normal as did snowfall.

Our overall average temperature for the month came in at 31.2 degrees. This is above the 16-year running average for December of 30.0 degrees. While we did experience some extreme cold for a few days, that was balanced out by a good number of days with above normal readings.

Denver International Airport, where the Mile High City’s official measurements are taken, averaged 29.3 degrees, a rare occasion where the airport was colder than us. This was a good bit below the 30-year Denver average for December of 31.2 degrees.

In Thornton, our readings ranged from a high of 65.0 degrees on the 27th to a bone chilling low of -14.6 degrees on the 22nd. Denver saw a high of 64 degrees on the 11th and a low of -24 on the 22nd.

In terms of precipitation, Thornton’s reading came in far above the 16-year average with 1.21 inches of liquid precipitation. Much of that can be attributed to the storm on the 28th and 29th that saw us receive nearly one inch combined between rain and snow melt. The monthly total made December 2022 Thornton’s wettest December of the past 16 and was far above the average of 0.46 inches.

Denver nearly matched our number with 1.18 inches at the airport. This was well above the Mile High City’s December average of 0.35 inches.

For the first three weeks of the month, Thornton saw no snow at all. Then, two storms saved the month. Thornton ended up with 11.1 inches, about an inch more than the 16-year running average of 10.2 inches for December.

Denver actually bested us for the month with 13.0 inches. That is well above the average of 8.0 inches for December since 1882.

Click here to view Thornton’s complete December 2022 climate summary report.

Thornton, Colorado's December 2022 Precipitation Summary. (ThorntonWeather.com)

Thornton, Colorado’s December 2022 Precipitation Summary. (ThorntonWeather.com)

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Tuesday in Thornton to offer up chilly temperatures, calm conditions

Tuesday, January 3rd, 2023 5:07am MDT

Our most recent storm system has moved out after delivering 2.3 inches of snow. In its wake, we will have a chilly but calm day.

Partly sunny skies are going to be above throughout the day. Look for high temperatures to top out around the freezing mark. Conditions will be calm and dry.

Tonight, lows will dip to the mid-teens under partly cloudy skies.

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Cold temperatures, some light snow for Thornton’s Monday

Monday, January 2nd, 2023 5:14am MDT

As of 4:00am Thornton had received 1.1 inches of light, fluffy snow. We will see more later today, perhaps some freezing drizzle before that.

Cloudy skies will be above throughout the day. Winds will be relatively light and out of the north. Look for highs today to only reach the freezing mark.

This morning we are in a dry slot of air, limiting the available moisture. A few flakes may fall along with some freezing drizzle. Around 11:00am through 4:00pm, we should see snow redevelop although it will be light. We may see another inch or so.

The Winter Weather Advisory remains in effect, mainly due to the freezing drizzle and the potential for icy roads so please be careful.

Tonight, a few flurries may linger but with minimal, likely no, additional accumulation. That will end by about 10:00pm and skies will see some clearing. Overnight lows will be in the mid-teens.

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December 2022 top shots: Monthly photo slideshow

Friday, December 30th, 2022 5:50am MDT
The Denver city and county building lit up for the holidays. (Bobby H)

The Denver city and county building lit up for the holidays. (Bobby H)

The month of December can offer everything from bone dry conditions to bone chilling cold and monstrous snowstorms.  The weather and wildlife all afford an abundance of photo opportunities as our December photo slideshow shows.

Leaves have fallen from trees now and the landscape can sometimes look quite stark.  However it only takes a quick shot of snow to change that picture greatly.  Throw in gorgeous sunrises and sunsets, plenty of wildlife big and small, kids playing and much more and the month can be quite colorful and eventful.

  • Slideshow updated December 30, 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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Thornton closes out 2022 with calm weather, welcomes 2023 with snow

Friday, December 30th, 2022 5:30am MDT

A relatively decent weekend of weather for us as we close out the year. As the next one begins though, we do see another winter blast making an impact.

For Friday, mostly sunny skies will be above and conditions calm. High temperatures will top out in the upper 30s. Tonight, lows will be in the mid-20s under mostly cloudy skies.

Saturday will be the warmest day of the period. Look for highs in the mid-40s under partly sunny skies. Saturday night, lows again dip to the mid-20s under mostly cloudy skies.

New Year’s Day is when we see things take a turn toward cooler, possibly whiter conditions. Mostly cloudy skies will be above and highs will only top out around freezing. Timing is still a bit in flux but it appears we may see some flurries / light snow Sunday afternoon and evening. Minimal accumulation, if any, is expected.

Sunday night things look to get interesting. Models are still not entirely consistent but they do point to a good shot of snow from Sunday night through all of Monday, possibly 3 to 5 inches worth. We will get a better feel for this system as it gets closer.

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Following heavy overnight snow, skies to clear, temps to be chilly

Thursday, December 29th, 2022 5:12am MDT

We had been warning in recent days that the storm had the potential to over-perform and indeed it did.

We received 0.25” of rain and then the transition to snow occurred after dark. We wake up this morning with a healthy 7.3 inches of heavy, wet snow. If you can get out of your neighborhood, you will be fine if you take it slow but unplowed roads will be a challenge.

The storm is already on its way out and we will be left with a pleasant winter day. Skies will be clearing leading to mostly sunny skies for most of the day. Highs will reach the mid to upper 30s.

Tonight, lows will dip to the teens under mostly clear skies.

Looking ahead, we now enjoy a few calm days but already have our eye on our next storm set to arrive New Year’s Day. Depending on its track, that may very well deliver another shot of snow.

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Warm temperatures start Wednesday, rain and snow arrive later

Wednesday, December 28th, 2022 5:10am MDT

A bit of half and half for the weather today. We will see relatively mild high temperatures initially but a cold front arrives this afternoon and that will bring rain at first, then snow in the evening.

Cloudy skies start us off and will, unfortunately, be with us all morning. Despite the cover, we still expect to see a high in the low 50s early to mid-afternoon. Around noon, winds will shift to come out the east signifying the arrival of a cold front and upslope flow.

Some light rain sprinkles / showers will be possible this afternoon. Activity looks to increase around sunset. By about 7:00pm rain should change to snow. Overnight, we could look at getting 1 to 3 inches. Lows will be in the mid-20s.

There are some variables at play with this storm that could impact our final snowfall totals, the primary one being temperature. As noted above, it will be relatively warm today and how fast those temperatures chill out will affect the timing of the transition from rain to snow.

Colder temps earlier would mean earlier snow and more of it. If it stays warmer longer, we would see less snow but more rain. We definitely will want to keep an eye on this come the afternoon as the impact of the storm may increase.

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December 25 to December 31: This Week in Denver Weather History

Wednesday, December 28th, 2022 5:08am MDT

This Week in Denver Weather History

Christmas Day is normally a relatively quiet day in terms of the weather as we recently discussed but the week between it and New Year’s can be quite eventful. Among the highlights are a prolonged period of sub-zero temperatures that lasted nearly five days. As you might expect, there have also been notable snowstorms that snarled holiday traffic as well.

From the National Weather Service:


In 1983…an extremely bitter cold spell occurred. The temperature remained below zero for 115 hours in Denver… The longest sub-zero period on record. The mercury dipped to 21 degrees below zero on the 21st…the coldest recorded temperature in over 20 years. The cold was accompanied by winds that plunged chill factors to 50 to 70 degrees below zero. Two people froze to death in Denver; both were found outside dead of exposure. Numerous cases of frostbite were reported. Hundreds of water pipes broke from the intense cold…water mains and natural gas lines also fractured…and electricity consumption reached record levels. Light snow totaling 5.8 inches fell at times…and holiday traffic was delayed at Stapleton International Airport for several hours. Eight daily temperature records were set at the time. The all-time record low maximum temperature for the month of 8 degrees below zero on the 21st still stands today. Other temperature records still standing include record low maximum temperatures of 5 degrees below zero on both the 22nd and 23rd and 4 degrees below zero on the 24th.


In 1891…heavy snowfall of 7.0 inches in downtown Denver provided a white Christmas. Most of the snow…6.5 inches… Fell on the 24th. Northwest winds were sustained to 30 mph with gusts to 40 mph on the 24th.

In 1894…snow began falling during the evening of the 24th… Ended during the early afternoon of the 25th…and totaled 6.4 inches in downtown Denver. Northwest winds were sustained to 26 mph with gusts to 30 mph on the 24th. The maximum snow depth on the ground was 5 inches. The high temperature was only 18 degrees on the 25th after a low of 8 degrees.

In 1980…strong Chinook winds of 50 to 60 mph occurred in the foothills with a wind gust to 90 mph recorded at Wondervu. West winds gusted to 33 mph at Stapleton International Airport on the 25th.

In 1997…a relatively rare Christmas snowstorm blanketed much of northeastern Colorado. Snowfall in and near the Front Range foothills and south of metro Denver ranged from 5 to 8 inches. Elsewhere…new snow accumulations were generally 1 to 3 inches. Snowfall totaled only 1.5 inches at the site of the former Stapleton International Airport. North winds gusted to 29 mph at Denver International Airport on the 24th.

In 2012…a winter-like weather moved into northeast Colorado on Christmas Eve as an upper level trough and a strong cold front moved through the region. At Denver International Airport…2.5 inches of snow fell from Christmas Eve through Christmas morning.  The high temperatures on Christmas Day only reached 16 degrees…which was the coldest day of the month.

In 2017…deep moisture and a strong jet stream brought a wave of heavy snow and strong winds to the mountains of north central Colorado. Storm totals included: 22 inches near Loveland Pass…15.5 inches near Copper Mountain…Eldora and 5 miles west-southwest of Guanella Pass; with 13.5 inches near Brainard Lake.


In 1873…northwest winds were sustained to 36 mph during the morning and to 48 mph in the evening. The Chinook winds warmed the temperature to a high of 53 degrees.

In 1883…gusty very strong winds raked Boulder…causing 11 hundred dollars in damage.

In 1985…Table Mesa in Boulder was buffeted by wind gusts to 68 mph.

In 1993…occasional high winds occurred over portions of the higher foothills west of Boulder and Denver. A wind gust to 87 mph was recorded on squaw mountain…and a gust to 83 mph occurred at Rollinsville. Northwest winds gusted to 35 mph at Stapleton International Airport.

In 2007…a winter storm brought heavy snow to the Front Range of Colorado. The heaviest snow fell near the foothills of Boulder…Douglas and Jefferson counties. The snow caused accidents throughout the Denver metropolitan area. Gusty winds produced snow drifts from 2 to 3.5 feet in depth. Total snowfall for the calendar day in Denver was 7.8 inches…setting a new record for Christmas Day. The measurement was taken at the former Stapleton International Airport; the previous record was 6.2 inches… Set in 1894. Storm totals in the Front Range foothills included: 13.5 inches at Coal Creek Canyon; 12 inches…5 miles east-southeast of Aspen Park; 11 inches; 6 miles southwest of kassler; 10.5 inches at Eldorado Springs. Elsewhere…storm totals ranged from 5 to 10 inches. In the urban corridor storm totals included: 9 inches near Elizabeth; 8 inches in southwest Denver…Highlands Ranch…Marston Reservoir and Wheat Ridge; 7.5 inches in Arvada; 7 inches in Centennial and Lakewood; 6.5 inches in Aurora and 8 miles southeast of Watkins; 6 inches in Boulder…Englewood and Parker. Elsewhere…storm totals ranged from 3 to 5 inches.


In 1904…after a warm Christmas Fay with a high temperature of 50 degrees…a late day cold front plunged temperatures to a low of 7 degrees…produced northeast winds sustained to 40 mph with gusts to 54 mph…and produced 5.2 inches of snow overnight for a late white Christmas. The maximum temperature on the 26th was only 16 degrees.

In 2014…a winter storm brought a rare Christmas Day snowfall to the Front Range Foothills and Urban Corridor…from the afternoon of the 25th to the evening of the 26th. Storm totals included: 12.5 inches…4 miles west of Boulder; 12 inches…4 miles southwest of Eldorado Springs and 4 miles south of Golden; 11 inches at Genesee; 10 inches near Allenspark…5 miles west of Chatfield Reservoir… 5 miles southwest of Golden and near Tiny Town; 8 inches in Lakewood and Louisville; 7.5 inches in Niwot; 7 inches in Longmont; with 6 inches in Broomfield and Frederick. At Denver International Airport…5.1 inches of snowfall was observed.


In 1980…temperatures were unusually warm during the week between Christmas and New Year’s. High temperatures for the week ranged from the mid-50’s to the mid-70’s. Four temperature records were set. Record highs occurred on the 26th with 68 degrees…the 27th with 75 degrees…and the 30th with 71 degrees. A record high minimum temperature of 41 degrees occurred on the 27th.


In 1877…heavy snow fell during the early morning and totaled nearly 6 inches. Precipitation from melted snow was 0.58 inch. After the snowfall…a number of sleighs were seen on the city streets.

In 1879…after a morning low of 4 degrees below zero… The temperature climbed to a high of 57 degrees in the city.

In 1907…west winds were sustained to 40 mph. The Chinook winds warmed the temperature to a high of 62 degrees.

In 1949…west winds gusted to 50 mph at Stapleton Airport.

In 1998…intense…but localized…downslope high winds developed near Wondervu in the foothills southwest of Boulder. Winds frequently gusted to 100 mph with a highest reported wind gust to 104 mph. West winds gusted to only 43 mph at Denver International Airport.


In 1954…a major storm dumped heavy snow across metro Denver. Snowfall totaled 8.6 inches at Stapleton Airport. The storm produced the heaviest snowfall of the calendar year and was the only measurable snowfall in December.

In 1987…a snowstorm stalled in northeastern Colorado…giving metro Denver its worst winter storm in 4 years. Total snowfall from the storm ranged from 12 to 18 inches on the east side…1 to 2 feet in Boulder County…and 2 to 3 feet in western and southern parts of metro Denver. The largest reported snowfall was 42 inches at Intercanyon in the foothills southwest of Denver. Snowfall totaled 14.9 inches at Stapleton International Airport. Winds were light on the 26th…but increased as high as 40 mph on the 27th… Creating near-blizzard conditions and forcing complete closure of Stapleton International Airport for about 8 hours. The strong winds whipped drifts to 5 feet high on the east side of town. All interstate highways leading from Denver were closed on the 27th.


In 1979 a heavy snow storm dumped 6 to 10 inches of snow over the metro area and 15 to 20 inches at Boulder with up to 2 feet in the foothills west of Boulder. Heavy snowfall totaled 6.0 inches at Stapleton International Airport where north winds gusted to 21 mph. Most of the snow… 4.8 inches…fell on the 27th.


In 1895…west Chinook winds sustained to 44 mph with gusts to 48 mph warmed the temperature to a high of 52 degrees.

In 1901…an apparent cold front produced sustained north winds to 41 mph with gusts to 48 mph.

In 1957…northwest winds gusting to 52 mph produced some blowing dust across metro Denver.

In 1975…a northwest wind gust to 53 mph was recorded at Stapleton International Airport.

In 1976…a strong pacific cold front moving across metro Denver produced a northwest wind gust to 53 mph at Stapleton International Airport.

In 1990…high winds raked the eastern foothills with a wind gust to 84 mph clocked on Fritz Peak near Rollinsville. The strong northwest winds of 50 to 70 mph whipped newly fallen snow over higher areas into billowy clouds several hundred feet high that could be seen from most locations across metro Denver.

In 1996…another round of high winds developed over portions of the Front Range foothills during the morning hours. Several wind gusts from 70 to 100 mph were reported at Wondervu southwest of Boulder. West-northwest winds gusted to 38 mph at Denver International Airport.

In 2005…a trained weather observer in Georgetown recorded a wind gust to 94 mph. No damage was reported.

In 2007…a winter storm brought heavy snow to portions of the urban corridor and adjacent plains. Storm totals generally ranged from 3 to 7 inches. Locally heavier bands produced up to 10 inches of snow. In the urban corridor…storm totals included: 10 inches…10 miles south-southeast of Buckley AFB and at Castle Pines; 9.5 inches…4 miles south-southeast of Aurora and Kassler; 7.5 inches…2 miles southeast of Highlands Ranch; 7 inches in Aurora and Sedalia; 6.5 inches in Arvada…4 miles east of Denver and Lafayette; 6 inches in Castle Rock and Thornton. A measurement of 5.4 inches was taken at the former Stapleton International Airport. The official total for the month was 20.9 inches; making it the 6th snowiest December on record. » Click here to read the rest of December 25 to December 31: This Week in Denver Weather History

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