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Thornton’s December preview: Will there be an end to the mild, dry conditions?

Friday, December 1st, 2017 3:16pm MDT

November proved to be an extraordinarily warm and dry month. Does December have hope for relief?

The month of December brings with it the official start of winter and oftentimes, colder and snowier weather conditions.

It however can also offer unseasonably warm temperatures and bone dry conditions.  Given our recent mild and dry weather, we are certainly hoping for a change in the coming month.

Overall December’s monthly mean temperature of 30.0 degrees (1981 – 2010 averages) makes it our coldest month.  Snow is always on everyone’s mind this time of year but December is only our 3rd snowiest month behind March and November with an average of 8.5 inches of the white stuff.

Get all the details on Thornton’s December weather including a look back at historical events and a look at the long range forecast in our December weather preview here.

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Thornton’s weekend to bring warming temperatures, calm and dry conditions

Friday, December 1st, 2017 4:59am MDT

Going back up – the thermometer that is. High pressure will dominate the weather scene this weekend leading to calm, dry and mild conditions.

Friday will see a good bit of cloud cover but we will be dry, winds light. Highs today will top out near the 60 degree mark. Tonight, partly cloudy skies will be above as we dip to a low near freezing.

Tomorrow will offer the most sun of the three day period with sunny skies expected throughout the day. Highs on Saturday will warm a couple of degrees to the low 60s. Saturday night into Sunday morning temperatures will dip to the mid-30s under partly cloudy skies.

The weekend closes out on Sunday with the warmest day of the period. Mostly sunny skies will be above as we head for a high in the mid to upper 60s.

Have a great weekend!

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Thursday brings pleasant, mild conditions

Thursday, November 30th, 2017 4:54am MDT

Following a chilly start, Thornton will enjoy a nice late fall day with lots of sun, temps above normal.

Look for sunny skies to be above throughout the daytime hours. Pre-dawn temperatures start below freezing but then begin a climb toward a high in the mid-50s. Winds will be calm, conditions dry.

Tonight, skies remain mostly clear with lows dipping to near freezing.

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Unseasonably warm temperatures return for Thornton’s Wednesday

Wednesday, November 29th, 2017 5:07am MDT

Yesterday brought a bit of a cool down with ‘normal’ temperatures. Today, we bounce right back with mercury readings well above average.

The day starts with clear skies and while there will be a few clouds here and there during the day, none will be intrusive. Winds will be relatively light and out of the north, conditions dry. Temperatures start out on the cold side and below freezing but then begin a climb toward a high near the 60-degree mark. Average for the date is 46 degrees.

Tonight, skies remain mostly clear and lows once again will drop below freezing.

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In wake of cold front, Thornton cools down to near-normal levels

Tuesday, November 28th, 2017 5:13am MDT

Yesterday we saw record-setting warmth but that has come to an end and today we will experience a bit of a change. However, while much cooler, we still will see a largely seasonal day.

The day starts off with mostly cloudy skies and perhaps a few areas of drizzle before dawn. After that, skies will begin to clear and by the afternoon mostly sunny skies will be above. Temperatures start out chilly but will be on their way up with highs coming within a couple of degrees of the average for today’s date (46 degrees).

Tonight, mostly clear skies will lead to chilly temps and overnight lows near freezing.

Looking ahead, we’re not going to see the kind of 70+ degree warmth of the last few days however temperatures will be returning to above normal levels for the balance of the week. Details in the extended weather forecast here.

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Denver sets record high for November 27, highest temp ever recorded in November

Monday, November 27th, 2017 4:02pm MDT

Record High TemperaturesA double shot of high temperature records for the Mile High City today.

As measured at Denver International Airport, Denver saw a high today of 81 degrees at 12:56pm.  This easily bested the record high temperature for November 27 of 74 degrees set in 1950 and 1903.

Additionally, the 81 degree reading is the warmest reading ever seen in the month of November. The old record was 80 degrees on the 8th of 2006 & the 16th of 2016.

Of course the key to all of the above is the “as measured at Denver International Airport.”  Since moving Denver’s official weather station to the airport far east of its historical locations, we have seen similar occurrences of temperature extremes that don’t mate up with stations close to the city.

Today for example, the station at the Denver City Park recorded a high of 78 degrees.  Still a record but a far cry from what the airport reported.  As a result, these new records really should come with an asterisk.

Here in Thornton, we saw a high of 77.5 degrees at 1:24pm.

Pretty big changes are on the way tonight when a cold front arrives. That will send temperatures down and bring us a chance for snow overnight. Details in the extended forecast here.

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Thornton’s Monday to see near record-setting temps followed by possible overnight snow

Monday, November 27th, 2017 5:20am MDT

From one extreme to the next in 24 hours. We will enjoy another extraordinarily warm day today but a cold front arrives overnight that may bring us only our second snowfall of the month.

The day starts off with partly sunny skies and we can expect similar cloud coverage throughout the day. Winds will be a bit breezy, out of the south-southwest initially then shifting to come from the west in the afternoon. Temperatures will climb steadily this morning and head toward a potential high in the mid-70s.

Average high temperature for the date is 47 degrees and the record high is 74 degrees last set in 1950. As long as those clouds don’t inhibit temperatures too much, that record may very well fall.

The cold front will arrive this evening and usher in changes. Temperatures overnight will drop to near freezing. From midnight through sunrise tomorrow, we have a chance for precipitation, rain initially then snow. Unfortunately we just don’t see this amounting to much at all though.

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November 2017 top shots: Monthly photo slideshow

Sunday, November 26th, 2017 7:17pm MDT
November 3, 2017 - A stunning sunrise in Thornton. (Jessica Bloom)

November 3, 2017 – A stunning sunrise in Thornton. (Jessica Bloom)

Typically November is a quiet weather month with plenty of nice, fall days but it can also turn wet with healthy doses of snow and moisture.  The wide variety of conditions can create picturesque scenes ranging from blue skies and snow-capped mountains to a wintry wonderland in the metro area.

November is the second snowiest month of the year so winter conditions are not unusual.  Typically though, these bouts of cold are short-lived and normal daytime conditions are pleasant.

Outdoor activities continue to be quite popular during the month.  The cooling temperatures do oftentimes lead to an increase in wildlife activity.

All of the above help lead to a month in which a wide variety of scenes, flora and fauna can be captured.

  • Slideshow updated November 26, 2017
  • 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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Denver sets record high temperature for November 26

Sunday, November 26th, 2017 6:31pm MDT

Record High TemperaturesThe unusually warm temperatures we have seen this month definitely make it hard to believe we are now at the end of November. Today continued the trend as the mercury climbed into record-setting territory.

At 2:16pm the temperature topped out at 74 degrees at Denver’s official station at Denver International Airport.  These easily bested the record high temperature for the date of 72 degrees set in 1998.

Here in Thornton we were just a touch warmer with a high of 74.5 degrees.

The temperatures today continue the trend of a very warm, dry November.  Currently, the overall average temperature for the month is running nearly five degrees above normal.

Tomorrow looks to bring another unseasonably warm and possibly record setting day. See the extended forecast here.

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November 26 to December 2: This week in Denver weather history

Sunday, November 26th, 2017 8:21am MDT
This Week In Denver Weather History

November 26 to December 2: This Week in Denver Weather History

Cold, snow and wind are the dominant conditions we see in our look back at this week in Denver weather history. All three are common this time of year and extremes with those conditions seem to be unusually common as well.

Among the highlights are numerous high wind events that not only caused damage but also injury to unprepared residents. Significant snowfall also appears many times including a storm in 1983 that shut down the city for the Thanksgiving weekend and left snow on the ground for 63 days.

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From the National Weather Service:

25-26

In 1887…snowfall totaled 2.9 inches in the city. This was the only measurable snow of the month. Northeast winds were sustained to 18 mph on the 26th when the temperature dipped to 12 degrees below zero.

In 1959…a sharp cold front produced a northwest wind gust to 51 mph…followed by snow and falling temperatures from a high of 60 degrees to a low of 23 degrees at midnight on the 25th. Snowfall totaled 4.4 inches at Stapleton Airport before ending early on the 26th.

In 1972…winds gusted to 104 mph at the Rocky Flats plant south of Boulder. Gusts to 70 mph were recorded at the National Bureau of Standards in Boulder…while in downtown Boulder winds peaked to 68 mph. Some damage was reported. Northwest winds gusted to 47 mph at Stapleton International Airport on the 26th.

In 1984…blowing snow closed I-70 east of Denver…stranding over a thousand travelers in Limon. Denver received only 2.3 inches of snowfall. North winds gusted to 31 mph at Stapleton International Airport.

In 1999…strong Chinook winds redeveloped overnight in and near the foothills. Peak wind gusts included 72 mph atop Blue Mountain near Wondervu and at the National Center for Atmospheric Research mesa lab above Boulder.

25-27

In 1978…heavy snowfall of 6.0 inches was measured at Stapleton International Airport where north winds gusted to 20 mph. Most of the snow…4.8 inches…fell on the 25th. The greatest amount of snow measured on the ground was 5 inches due to settling and melting.

25-28

In 1952…the average coldest 4-day period in November in the previous 81 years of record occurred. Maximum temperatures of 19…15…21…and 25 degrees were recorded. Minimum temperatures were below zero each day with readings of 7 below…6 below…5 below…and 6 below.

25-29

In 1985…dense fog with visibilities as low as 1/8 mile occurred on five consecutive days at Stapleton International Airport. The fog was at times accompanied by light snow… Light freezing drizzle…or ice crystals. Fog occurred all day on both the 26th and 29th.

26

In 1873…west winds increased to a violent gale at 3:00 am and reached a maximum sustained velocity of 56 mph at 3:15 am. The winds continued with a velocity of not less than 40 mph until 6:00 am. Winds continued brisk for the remainder of the day. The strong winds caused damage to houses and buildings in the city. Temperatures were in the 50’s through early afternoon with a recorded high of 59 degrees. Winds also blew strongly in Boulder and caused 300 dollars in damage.

In 1911…post-frontal northeast winds were sustained to 43 mph with gusts as high as 52 mph. Snowfall was only 0.5 inch.

In 1965…post-frontal snowfall totaled 5.5 inches at Stapleton International Airport where strong west winds gusted to 39 mph during the afternoon.

In 1976…2 to 4 inches of snow with an arctic cold front produced near zero visibility at times in blowing snow… Causing multiple automobile accidents in metro Denver. Snowfall totaled 3.5 inches at Stapleton International Airport where north winds gusted to 39 mph. Temperatures hovered in the teens and lower 20’s most of the day dipping to 7 degrees by midnight.

In 1977 a strong wind storm raked metro Denver. High winds blew windows from office towers in Denver and Boulder. Thirteen people were injured in Boulder due to flying debris. Wind gusts to 119 mph were clocked on Davidson Mesa southeast of Boulder…with 109 mph in downtown Boulder. Six airplanes were damaged at Jefferson County Airport near Broomfield. Winds to 90 mph were reported in Lakewood. Glass was blown out of several vehicles in Wheat Ridge…and roofs were blown off 4 houses in Arvada. Several houses under construction collapsed across metro Denver. Winds to 75 mph were reported at the Denver Federal Center with 90 mph at Rocky Flats. West winds gusted to 51 mph at Stapleton International Airport. Total insured damage from the wind storm was 2.2 million dollars.

In 1987…a thanksgiving snowstorm brought 5 inches of snow to metro Denver and 6 inches to the foothills. At Stapleton International Airport…snowfall totaled 5.0 inches…north winds gusted to 22 mph…and temperatures hovered in the upper 20’s most of the day.

In 1991…strong winds were recorded in and near the eastern foothills. Winds at Rollinsville were clocked to 70 mph with 45 mph recorded in Boulder and 51 mph at the U.S. Atomic Energy Commission Rocky Flats plant. West winds gusted to only 28 mph at Stapleton International Airport.

 

26-27

In 1876…heavy snowfall totaled 9.0 inches over the city from 5:00 pm on the 26th through 5:00 p.m. on the 27th. Precipitation was 0.30 inch on the 25th and 0.60 inch on the 27th.

In 1919…an incursion of cold arctic air produced snowfall of 4.6 inches over downtown Denver. Temperatures dipped to 5 degrees below zero on the evening of the 26th and recovered to a high of only 1 degree below zero on the 27th…the all-time record low maximum for the month of November and the record for the date. Northwest winds were sustained to 25 mph with gusts to 26 mph on the 26th.

In 1923…snowfall of 2.0 inches was the only snow of the month. North winds were sustained to 22 mph on the 26th.

In 1972…heavy snowfall totaled 7.5 inches at Stapleton International Airport where north winds gusted to only 18 mph on the 27th.

In 1983…a Thanksgiving blizzard dumped 21.5 inches of snowfall in 37 hours with a maximum of 18 inches on the ground at Stapleton International Airport. The storm produced howling winds…which paralyzed Thanksgiving weekend transportation across all of eastern Colorado. On the 27th…Stapleton International Airport closed… Opening 24 hours later. Interstate highways were closed in all directions…but west…from Denver. At Stapleton International Airport…north winds gusted to 36 mph on the 26th and to 29 mph on the 27th. However…most wind speeds across metro Denver were 15 to 30 mph. Temperatures hovered in the teens and lower 20’s. Many stores and businesses closed. Several high school football games were postponed. Across metro Denver…snow depth varied from 15 inches in Commerce City to 28 inches near Chatfield Reservoir. Snow removal in Denver was estimated at 1.5 million dollars. Following the storm… An inch or more of snow remained on the ground for 63 consecutive days through January 27…1984. This is the longest period of continuous snow cover ever recorded in Denver.

In 1990…an early winter storm deposited 2 to 8 inches of wet snow across metro Denver. Snowfall totaled 3.4 inches at Stapleton International Airport where northeast winds gusted to 30 mph on the 26th.

In 1993…strong winds swept off the foothills across metro Denver. Sustained winds of 30 to 50 mph were common across the area. Wind gusts to 67 mph were recorded atop Squaw Mountain near Idaho Springs. West winds gusted to 36 mph at Stapleton International Airport on the 26th. The strong winds produced some blowing snow…reducing the visibility to less than one mile at times.

In 1995…snowfall totaled 3.7 inches at the former Stapleton International Airport site. The foothills west of Denver received 4 to 7 inches of snow. North-northeast winds gusted to 34 mph at Denver International Airport on the 26th.

27

In 1965…strong winds buffeted Boulder…causing 11 thousand dollars in damage. Wind gusts to 75 mph were recorded downtown. West winds gusted to 38 mph at Stapleton International Airport.

In 1994…winds gusted to 87 mph atop Squaw Mountain…5 miles south of Idaho Springs…and to 84 mph on Fritz Peak near Rollinsville in the foothills southwest of Boulder. Northwest winds gusted to 40 mph at Stapleton International Airport.

28

In 1884…a windstorm during the afternoon produced northwest sustained winds to 46 mph. Two wooden slats were blown out of the weather instrument shelter…and nearly all of the slats on the north and west sides were loosened.

In 1898…northwest winds were sustained to 50 mph with gusts as high as 80 mph.

In 1902…northwest winds were sustained to 40 mph with gusts to 48 mph. The strong apparent Bora winds warmed the temperature to a high of only 40 degrees.

In 1904…northwest winds sustained to 44 mph with gusts to 58 mph warmed the temperature to a high of 58 degrees.

In 1927…strong west winds occurred in Boulder…causing widespread minor damage. A wind gust to 65 mph was recorded at Valmont east of Boulder. The west winds possibly produced a cyclonic twist.

In 1928…heavy snowfall totaled 7.0 inches over downtown Denver.

In 1957…a vigorous cold front produced north-northeast wind gusts to 54 mph at Stapleton Airport. Light snow following the front totaled only 0.2 inch.

In 1970…strong Chinook winds reached 77 mph in downtown Boulder.

In 1978…wind gusts 60 to 90 mph were reported in and near the foothills.

In 1984…high winds of 60 to 80 mph occurred along the Front Range eastern foothills.

In Boulder…the high winds blew the roof off a service station. Several trees were felled… Damaging some cars. An elderly woman was injured when she was knocked down by a wind gust and blown 20 feet into some bushes. Northwest winds gusted to 36 mph at Stapleton International Airport.

In 1994…winds gusted to 72 mph in Boulder. No damage was reported. Northwest winds gusted to 35 mph at Stapleton International Airport.

» Click here to read the rest of November 26 to December 2: This week in Denver weather history

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