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Cold, blustery conditions for Thornton’s Tuesday as storm system winds down

Tuesday, January 22nd, 2019 5:21am MDT

Well, things didn’t quite pan out as far less snow fell than we were expecting due to limited lift and instability. We’ll see some light snow early this morning but there will be clearing later although cold temps and blustery winds will continue.

Cloudy skies, blustery winds and blowing, light snow start things off. Minimal accumulation is expected. However, roads are slick in spots and the commute might be slow so you will want to plan accordingly.

Gradual clearing will start by mid-morning as snow comes to an end. The blustery winds however will continue into the late afternoon making it uncomfortable outside. High temperatures today will only top out around the freezing mark.

Tonight, winds will calm, skies will be mostly clear and temps will drop to the mid-teens.

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Mild temps and sun start the day Monday, but cold and snow will end it

Monday, January 21st, 2019 5:21am MDT

Don’t let the sun and warmth of the start of the day today fool you. An approaching storm system is going to bring cold snow to Thornton this evening.

We start out with mostly clear skies and those will be with us till later this morning when clouds will start to increase. Temperatures will top out in the early afternoon in the low 50s, then begin a descent.

We’ll see the arrival of the front right about rush hour at which time winds will increase. Precipitation may initially fall as rain with a slow changeover to snow as temperatures drop in the evening. It will be quite breezy in the overnight hours with lows dropping to the low 20s.

The bulk of the snow will come from about 11:00pm through 5:00am tomorrow. The track of this storm is still a bit up in the air but right now we would say 1 to 3 inches is probably the target for us. The potential is there for more depending on how things finally play out.

Keep an eye on our main page for all the latest.

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January 20 to January 26: This week in Denver weather history

Sunday, January 20th, 2019 4:36am MDT
This week in Denver weather history

January 20 to January 26: This week in Denver weather history

Damaging wind events dominate our look back at this week in Denver weather history. Also making appearances are extreme cold and significant snowstorms.

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.

15-23

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.

18-20

In 1958…snowfall totaled 6.9 inches at Stapleton Airport where east-northeast winds gusted to 26 mph on the 18th.

18-24

In 2005…a week of mid-winter unseasonably warm weather pushed high temperatures into the 60’s or more on all but one day. During the period…the highest temperature of 70 degrees on the 20th was a new record maximum for the date. Low temperatures remained above freezing on 4 of the days.

19-20

In 1935…snowfall of only 0.8 inch during the evening of the 19th was the only measurable snowfall of the month. The light snow developed behind an arctic cold front as temperatures plunged to a low of 13 degrees below zero on the 20th. High temperature of only 2 degrees on the 20th was a record low maximum for the date. Northeast winds were sustained to 16 mph on the 19th.

In 1986…Chinook winds gusting to 39 mph at Stapleton International Airport provided record breaking warmth. The warmest temperature of the month…68 degrees on the 19th…was also a record high for the date. The low temperature of 41 degrees on the 20th equaled the record high minimum for the date.

In 1991…a strong cold front moved south across metro Denver. Upslope conditions produced 3 to 6 inches of snow along the Front Range with 5 inches in Westminster and 4 inches in Thornton. Snowfall measured 4.9 inches at Stapleton International Airport where north winds gusted to 31 mph.

20

In 1894…northwest winds were sustained to 40 mph with gusts to 45 mph in the city.

In 1911…west Chinook winds sustained to 46 mph warmed the temperature to a high of 62 degrees.

In 1975…a warm Chinook wind produced a west wind gust to 53 mph at Stapleton International Airport. Winds were much stronger near the foothills…where 80 mph winds in Boulder caused damage to homes…buildings…power lines… And autos.

In 1986…high winds buffeted the foothills from Denver north. The strongest reported wind was 72 mph in Fort Collins. A wind gust to 39 mph was reported at Stapleton International Airport in Denver.

In 1996…high winds developed for a short time in the Front Range foothills in the wake of a weak upper level disturbance. Wondervu recorded a peak wind gust to 90 mph… While winds gusted to 84 mph atop squaw mountain near Idaho Springs. West winds gusted to only 29 mph at Denver International Airport.

In 2011…a snowboarder and his dog were killed when he triggered an avalanche in the backcountry northeast of Berthoud Pass.

20-21

In 1973…a major storm produced 7.5 inches of snowfall at Stapleton International Airport where north winds gusted to 32 mph causing some blowing snow.

In 2002…high winds developed over portions of the northern mountains and Front Range foothills. Several trees were blown down in Gilpin County along State Highways 119 and 46. Wind gust reports included: 90 mph 11 miles north of Central City…83 mph near Fritz Peak…76 mph at Aspen Springs…and 80 mph at Nederland. West winds gusted to only 39 mph at Denver International Airport on the 20th.

20-22 » Click here to read the rest of January 20 to January 26: This week in Denver weather history

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Cold and snow start the weekend, will clear out quick and leave us with nice weather

Friday, January 18th, 2019 5:04am MDT

A storm system will impact Thornton Friday offering colder temps and some light snow. It however won’t be here long and Saturday and Sunday look to be quite nice.

For today, mostly cloudy skies will be above. Winds will become breezy and out of the north for much of the day. Some light snow will be possible, mainly from 9:00am to 3:00pm. Little to no accumulation is expected. Temps will be topping out in the low 40s. Tonight, the system moves out and leaves us with partly clear skies. Overnight lows will be in the low 20s.

Saturday rebounds nightly with calm, dry conditions. Mostly sunny skies will be above with highs coming close to 50 degrees. Saturday night into Sunday morning, partly cloudy skies will be above with lows in the upper 20s.

Sunday will be the warmest day of the three day period. Look for highs in the mid to upper 50s under mostly sunny skies.

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January 27 to February 2: This week in Denver weather history

Thursday, January 17th, 2019 5:04am MDT
This week in Denver weather history

January 27 to February 2: This week in Denver weather history

High wind and heavy snow events dominate our look back at this week in Denver weather history. Most notable is a major snowstorm just last year that helped to provide at least some relief from tinder dry conditions. Hopefully we can see some of that this year!

From the National Weather Service:

25-27

In 1897…a cold spell resulted in three temperature records. Low temperature of 14 degrees below zero on the 27th was a record minimum for the date. High temperatures of only 3 degrees on the 25th and 2 degrees on the 26th were record low maximums for the dates. Very light snow or flurries fell on the 25th and 26th at times.

26-27

In 1944…heavy snowfall totaled 8.0 inches in downtown Denver. Most of the snow…7.0 inches…occurred on the 26th when northwest winds were sustained to 17 mph.

In 1973…at Stapleton International Airport…only 3.8 inches of snowfall were measured and north winds gusted to 40 mph causing some blowing snow…while over the Colorado eastern plains heavy snow accompanied by high winds created widespread blizzard conditions closing many highways.

In 1994…the combination of an upper level storm system and moist upslope winds brought heavy snow and cold temperatures to metro Denver and much of eastern Colorado. Snowfall across metro Denver averaged 5 to 7 inches. Snowfall totaled 3.8 inches at Stapleton International Airport where east winds gusted to 21 mph on the 26th.

In 2000…snow…heavy in the mountains…spread over the foothills and metro Denver. Eight inches of snow were measured at Bergen Park and near Evergreen. Snowfall totaled 3.8 inches at the site of the former Stapleton International Airport.

26-1

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.

27

In 1888…the highest recorded temperature in January…76 degrees…occurred.

In 1967…strong winds caused a power outage in Boulder.

In 1984…this was the last day of 63 consecutive days with snow cover of one inch or more in Denver. This longest period of snow cover on record began with the Thanksgiving weekend blizzard on November 26-27…1983… When 21.5 inches of snow fell at Stapleton International Airport. Additional snowfall during December and January prolonged the event. Snow depth on the ground to the nearest inch was measured once daily at 5:00 am MST.

27-28

In 1899…snowfall totaled 6.2 inches in the city. Northeast winds were sustained to 36 mph with gusts to 40 mph on the 28th.

In 1965…high winds raked the Front Range foothills. West winds gusted to 89 mph on Table Mountain in Boulder…87 mph at Rocky Flats…and 54 mph at Stapleton International Airport. Damage and minor injuries occurred in Boulder and western metro Denver. Four men were injured by wind- caused accidents while working on construction…2 in Denver and 2 in Boulder. There was extensive damage to power lines… Buildings…signs…and trees. Some minor accidents were caused by blowing dust and debris. Blown dust accumulated 2 to 3 feet deep on some lawns in northern metro Denver suburbs. Dust blew into buildings and homes.

In 1989…the heaviest snowstorm of the winter dumped 9 to 15 inches of snow across metro Denver. Snowfall totaled 8.8 inches at Stapleton International Airport with most of the snow…8.6 inches…falling on the 28th. Strong north winds gusting to 46 mph whipped the snow into 2-foot drifts and reduced visibility in blowing snow. The foothills received up to 18 inches of snow. The snow fell on a weekend…so closures and other disruptions were minimal. The public reported thunder in Arvada…Wheat Ridge…and Boulder on the evening of the 27th. A thunderstorm produced snow pellets at Stapleton International Airport during the early morning hours of the 28th. This was the first thunderstorm in the city during January since 1932.

In 1996…winds to hurricane force were reported across the Front Range foothills in the wake of a pacific storm system. Recorded wind speeds included: 86 mph at the National Center for Atmospheric Research southwest of Boulder…86 mph atop Squaw Mountain west of Denver…and 75 mph at Jefferson County Airport in Broomfield. West-northwest winds gusted to 48 mph at Denver International Airport on the 28th.

In 2009…high winds buffeted the foothills of Boulder and Jefferson counties. Peak wind gusts included: 101 mph at Eldora Ski Resort…100 mph…6 miles northwest of Boulder; 84 mph at NCAR Mesa Lab…79 mph…5 miles northwest of Boulder; and 75 mph at the national wind technology center. In Nederland…a wind turbine recently installed was damaged by the high winds. A peak wind gust of 38 mph occurred at Denver International Airport on the 28th.

27-31

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.

28

In 1872…the low temperature dipped to 22 degrees below zero… A record minimum for the date.

In 1909…gale force north winds were sustained to 45 mph behind an apparent cold front…which also produced a trace of snow.

In 1986…a wind gust to 67 mph was recorded in Boulder. West winds gusted to 41 mph at Stapleton International Airport.

28-29

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.

28-30

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.

29

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.

» Click here to read the rest of January 27 to February 2: This week in Denver weather history

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Thornton’s Thursday to offer some clouds but with unseasonably warm temps

Thursday, January 17th, 2019 5:00am MDT

One more mild day today before things briefly turn colder. A wave cloud will keep things above a bit covered up but we will still see temps warmer than normal.

The day starts off with partly clear skies and that should be the case through the day as a wave cloud is expected to develop. Temperatures will top out in the low to mid-50s. These may be inhibited slightly depending on how thick that wave cloud becomes.

Tonight, lows will drop to around 30 under mostly cloudy skies. The approaching storm system may bring some light snow in the pre-dawn hours tomorrow but it shouldn’t amount to much, if anything.

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Increased clouds, temps above normal for Thornton’s Wednesday

Wednesday, January 16th, 2019 4:56am MDT

A passing system will bring more snow to Colorado’s high country today. Here at lower elevations, we will continue to be warmer than normal but with a good bit of cloud cover.

Mostly cloudy skies start us off this morning and will continue throughout the day today. Winds will be out of the west and northwest and just a touch breezy in the afternoon. High temperatures should climb to around the 50 degree mark.

Tonight, partly clear skies will be above with lows in the mid-20s. Winds will become breezy in the late evening then settle down overnight.

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Tuesday to offer a good dose of sun, warmer than normal temps

Tuesday, January 15th, 2019 4:53am MDT

Another nice, winter day for Thornton. We’ll continue to see a good bit of sun and temps will be above normal.

The day starts with clear skies then we see a few clouds appear this morning. Overall mostly sunny skies will be above for most of the day.

Temperatures will top out right near the 50 degree mark. The average high for today’s date is 44 degrees.

Tonight, clouds will be increasing with lows dipping to the mid-20s.

Keep an eye on current conditions with our live weather gauges here.

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Lots of sun, temps just a bit above normal for Thornton’s Monday

Monday, January 14th, 2019 5:01am MDT

A nice looking start to the workweek for us. Clear skies will be above and mercury readings will be slightly warmer than normal.

Sunny skies will be the rule throughout the day today. We’ll have calm conditions and light winds out of the southwest. Temperatures will top out in the mid to upper 40s.

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

Most of the rest of the week will feature above normal temperatures and generally calm conditions. Our next storm system looks to arrive Friday and may bring a shot of snow.

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January 13 to January 19: This week in Denver weather history

Sunday, January 13th, 2019 4:02am MDT
This week in Denver weather history

January 13 to January 19: This week in Denver weather history

Cold, snow and wind are expected this time of year in northeastern Colorado as we have seen many notable events with those conditions in our past. Notably in our look back at this week in Denver weather history we see that extreme versions of these can lead to injury and even death.

From the National Weather Service:

10-13

In 1963…an arctic cold wave plunged temperatures well below zero across metro Denver. Temperatures were below zero for a total of 64 consecutive hours. Low temperatures reached 25 degrees below zero on both the 11th and 12th. The high temperature of 9 degrees below zero on the 11th was the coldest ever recorded at Stapleton Airport and equaled the record low maximum for the month first set on January 19…1883…in downtown Denver. The high temperature on the 12th reached only 1 degree below zero. On the 12th…an 18-year-old youth died of exposure from the extreme cold in Denver. There were many losses and damage to property from frozen water systems…stalled cars…and over-burdened heating systems. Light snow accompanied the arctic blast. At Stapleton Airport…2.3 inches of snow fell on the 10th and 11th.

11-14

In 1997…cold arctic air plunged temperatures below zero across metro Denver. The temperature was below zero for 60 consecutive hours from the afternoon on the 11th to around daybreak on the 14th. The high temperature of only 1 degree below zero on the 12th equaled the record low maximum for the date last set in 1963. The low temperature dipped to 14 degrees below zero on the 12th.

12-13

In 1936…strong winds in Boulder blew roofs off homes. Wind gusts over 60 mph were recorded at the University of Colorado and a gust to 55 mph measured at Valmont.

In 2002…high winds developed in the foothills on the 12th and spread over the plains on the 13th. Winds gusted to 76 mph at the National Center for Atmospheric Research on the mesa in Boulder on the 12th. Northwest winds gusted to 49 mph…the highest wind of the month…at Denver International Airport on the 13th. The strongest winds were north and northeast of metro Denver.

13

In 1875…the low temperature dipped to 20 degrees below zero… A record low for the date and climbed to a high of only 2 degrees below zero…a record low maximum for the date.

In 1880…the worst wind storm ever experienced in Boulder caused some damage and personal injuries.

In 1893…northwest winds were sustained to 42 mph in the city.

In 1904…northwest winds were sustained to 40 mph with gusts as high as 50 mph. The Chinook winds warmed the temperature to a high of 63 degrees. The low temperature remained above freezing…dipping to only 34 degrees.

In 1919…snowfall was 1.8 inches in downtown Denver. Melted snow resulted in only 0.12 inch of precipitation. This was the only snowfall and precipitation for the month.

In 1932…snowfall totaled 3.4 inches in downtown Denver. North winds gusted to 22 mph.

In 1967…high winds in Boulder gusted to 70 mph downtown. Some damage occurred. Northwest winds gusting to 38 mph at Stapleton International Airport produced some blowing dust.

In 1988…high winds occurred in Boulder with a wind gust to 70 mph at Table Mesa. In the foothills a wind gust to 82 mph was measured at Rollinsville. West winds gusted to 33 mph at Stapleton International Airport.

13-14

In 1960…snowfall totaled only 4.4 inches and northeast winds gusted to 28 mph at Stapleton Airport…while over southeast Colorado a near blizzard closed roads with drifts 3 to 6 feet deep.

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

In 1873…winds were brisk all day. After sunset…northeast sustained winds produced a perfect gale…behind an apparent cold front.

In 1875…the temperature remained below zero all day with a general northeast wind. At 9:00 pm the temperature was 1 degree above zero which was the official high for the day. The wind suddenly veered to the southwest and the temperature climbed 19 degrees in 15 minutes…7 more degrees in the next 5 minutes…and by 9:30 pm had risen to 36 degrees. By 9:35 pm the temperature had reached 40 degrees…a rise of 48 degrees in one hour and 39 degrees in half an hour. The sudden rise in temperature could be attributed to a receding arctic air mass and downsloping surface winds.

In 1906…the temperature climbed to a high of 56 degrees before an apparent cold front produced northeast winds sustained to 40 mph and a trace of snow in the afternoon.

In 1921…west winds were sustained to 44 mph with gusts to 46 mph. The downslope winds warmed the temperature to a high of 49 degrees.

In 1967…3.7 inches of snow fell at Stapleton International Airport with 7.7 inches measured in Boulder.

In 1982…strong Chinook winds buffeted Boulder…tearing the roof off a small apartment building. A gust to 88 mph was measured in Lakewood. Wind gusts of 60 to 80 mph were common along the foothills from Denver north to Fort Collins. Four people sustained minor injuries…mostly from flying glass. At least one person was knocked down by the winds. Several tractor trailer rigs were blown off I-70 near Golden…and numerous camper shells were blown off pick-up trucks.

14-15

In 1908…heavy post-frontal snowfall totaled 6.5 inches overnight. North winds were sustained to 32 mph. The temperature dropped 41 degrees in 24 hours from a reading of 48 degrees at 8:00 pm on the 14th to only 7 degrees at 8:00 pm on the 15th.

In 1950…strong winds occurred in Boulder and Louisville. Winds in excess of 60 mph were recorded at Valmont. Minor damage was reported. Southwest winds gusted to 50 mph at Stapleton Airport.

In 1959…a total of 5.5 inches of snow fell at Stapleton Airport.

In 1992…snow spread from the mountains across metro Denver. The heaviest snow was across the northern portion of the area where 7 inches fell at Thornton. At Stapleton International Airport…only 3.4 inches of snowfall were recorded and northeast winds gusting to 37 mph caused some blowing snow on the 14th.

In 1999…high winds howled across metro Denver. In Commerce City…strong winds toppled 3 utility poles resulting in a power outage to 600 homes. High wind reports included: 108 mph at Wondervu…80 mph at the Hiwan Golf Course in Evergreen…76 mph at Aspen Springs…75 mph at the Jefferson County Airport near Broomfield…74 mph in Boulder…and 70 mph at Georgetown. West to northwest winds gusted to 48 mph…the highest wind gust of the month…and warmed the temperature to a high of 60 degrees at Denver International Airport on the 15th.

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.

» Click here to read the rest of January 13 to January 19: This week in Denver weather history

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