41°F
Thornton, Colorado, USA
UpdatedSun, 24-Mar-2019 9:20pm MDT 
 

Navigation

ThorntonWeather.com on Twitter

ThorntonWeather.com on Facebook

 

Weather Geek Stuff - weathergeekstuff.com

Rocky Mountain Weather Network

Tony's Takes Photography

ThorntonWeather.com

Recent News and Posts


Thornton’s Tuesday should finally warm up, remains mostly cloudy though

Tuesday, October 2nd, 2018 5:04am MDT

Well, let’s try again at forecasting some warmer temperatures. 😉 We do believe we will bust out of the cool from the last couple of days and see readings a bit above normal today but with a good bit of cloud cover and a slight chance for storms.

The day starts off with mostly cloudy skies and we expect to see a good bit of cover throughout the day. Temperatures should warm to the mid-70s, maybe a bit above, as it appears the cloud cover shouldn’t have too much of an impact. Mid to late afternoon brings just a slight chance for storms on the Front Range although right now it isn’t very likely.

Tonight, skies will begin to clear some with lows in the mid-50s.

Join the Discussion - Post your commentJoin the Discussion!

First day of October to offer seasonal temps, a good bit of cloud cover

Monday, October 1st, 2018 5:00am MDT

With a good bit of moisture aloft, we will see a good bit of cloud cover but unfortunately only the slightest chance for precipitation. Temperatures do warm up today though to right near normal.

The day starts out with a few spots of fog and then we will see mostly cloudy skies above for the balance of the day. Mid to late afternoon may bring a shower or thunderstorm but right now the chances look slim.

As for temperatures, the average high for today’s date is 72 degrees and we should top out right near that.

Tonight, skies remain mostly cloudy with lows in the low 50s.

Join the Discussion - Post your commentJoin the Discussion!

September 30 to October 6: This week in Denver weather history

Monday, October 1st, 2018 2:28am MDT
This week in Denver weather history

September 30 to October 6: This week in Denver weather history

Our look back at this week in Denver weather history shows what has historically been a relatively quiet week. However that isn’t to say there aren’t events of note including days with severe thunderstorms, including one date that brought multiple tornadoes.

Be sure to scroll down to the bottom to check out video of one of the tornadoes that struck near Brighton on October 4, 2004.

From the National Weather Service:

30

In 1898…south winds were sustained to 41 mph with gusts to 54 mph.

In 1940…a late season thunderstorm in the city caused one lightning death.

In 1944…the month ended with a trace of rain on this date and for the month. A trace of rain also occurred on the 4th…9th…and 10th. There was no measurable precipitation for the month. The total of a trace of precipitation for the month equaled the driest September on record first set in 1892.

In 2009…a trained spotter in Coal Creek Canyon…recorded a peak wind gust to 88 mph.

30-1

In 1959…heavy snowfall totaled 5.9 inches at Stapleton Airport. Winds were light.

1

In 1892…the highest temperature ever recorded in October… 90 degrees…occurred. This is also the latest 90 degree reading of the season.

In 1898…southwest winds were sustained to 40 mph with gusts to 49 mph in the city.

In 1927…a trace of snow was the only snow of the month… Ranking the year…amongst several other years…the second least snowiest on record.

In 1971…a wind gust to 90 mph was recorded at Buckley Field in Aurora. The severe winds caused damage in northeast metro Denver. A brick wall of a bowling alley was blown down…the roof was blown off a garage…and some business signs were damaged. A man in the bowling alley was injured by flying glass. Northwest winds gusted to 43 mph at Stapleton International Airport.

In 1994…unusually strong thunderstorms for so late in the season pummeled metro Denver with large hail. The largest hail…2 inches in diameter…fell at Buckley Field. Hail 1 3/4 inches in diameter fell 7 miles northeast of Boulder and at Niwot. Hail 3/4 to 1 1/2 inches in diameter fell in Boulder…Arvada…wheat Ridge…Edgewater…capitol hill and northwest Denver…Bennett…and Strasburg. Hail of unknown size damaged a Boeing 737 aircraft and injured both pilots at Stapleton International Airport when the windshield was broken out on takeoff. Half inch diameter hail fell at Stapleton International Airport where northwest winds gusted to 40 mph and rainfall totaled 0.82 inch.

In 2009…strong downslope winds near the foothills produced a peak wind gust to 84 mph at the national wind technology center near Rocky Flats.

In 2014…severe thunderstorms produced wind gusts to 60 mph across parts of Arapahoe and Denver Counties. The intense wind gusts downed trees and power lines which caused a power outage near the Denver Technology Center. At Denver International Airport…a peak wind gust to 37 mph was measured from the northwest.

2

In 1903…southwest winds were sustained to 42 mph with gusts as high as 60 mph. The strong Chinook winds warmed the temperature to a high of 78 degrees.

In 1910…an apparent dry microburst produced sustained northeast winds to 43 mph.

In 1934…a trace of rain was the only precipitation of the month. This was the driest October on record.

3

In 1875…very dense haze hid the mountains from view as observed from the city.

In 1933…rainfall of just 0.01 inch was the only precipitation of the month. This was the second driest October on record.

In 1954…the low temperature cooled to only 60 degrees…the all-time record high minimum for the month October.

3-4

In 1969…the first snowfall of the season totaled 16.0 inches at Stapleton International Airport. There was a thunder snow shower on the evening of the 3rd…but otherwise little wind with the storm. The greatest snow depth on the ground was 8 inches due to melting. Heavy wet snow accumulated on trees…which were still in full leaf…and caused widespread damage from broken limbs and downed utility lines.

» Click here to read the rest of September 30 to October 6: This week in Denver weather history

Join the Discussion - Post your commentJoin the Discussion!

September 2018 top shots: Monthly photo slideshow

Sunday, September 30th, 2018 6:15pm MDT
Dramatic skies over Adams County start out the month of September. (Jessica Fey)

Dramatic skies over Adams County start out the month of September. (Jessica Fey)

The month of September is typically one of the more pleasant months in Colorado.  Temperatures are usually comfortable and there is not normally a lot of weather drama.  That however does not mean there aren’t plenty of photo opportunities.

Wildlife is still quite active along the Front Range and flowers will hold on to their petals for at least the first part of the month.  Then of course there is the weather which you never know what to expect.  Thunderstorms, heavy rain, and even snow are a possibility.

  • Slideshow updated September 30, 2018
  • 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!

Join the Discussion - Post your commentJoin the Discussion!

Thornton’s three-day period starts much cooler, will warm right back up

Friday, September 28th, 2018 5:09am MDT

A cold front arriving this morning is going to send the mercury down quite a ways below normal. However, we will quickly rebound with above normal temps Saturday and Sunday.

For today, the front is going to bring with it cloud cover this morning then this afternoon skies will begin to clear. Temperatures will be cool with highs only in the mid to upper 50s. Tonight, look for partly cloudy skies and lows in the low 40s.

Saturday bounces right back with highs jumping to the mid-80s. Mostly sunny skies will be above. Overnight Saturday night into Sunday morning, mostly clear skies will be above with lows in the mid-40s.

We close out the weekend with a dip in temperatures but remain quite nice. Look for mostly sunny skies Sunday with highs in the mid-70s.

Have a fantastic weekend!

Join the Discussion - Post your commentJoin the Discussion!

Temperatures climb to above normal for Thornton’s Thursday

Thursday, September 27th, 2018 5:07am MDT

A nice bump in temperatures today with a healthy dose of sun. We’ll see highs a good bit above normal today but tonight a cold front will usher in colder readings for Friday.

Today starts out with clear skies and there will be few clouds through the morning. The afternoon will bring some coverage but nothing intrusive. Winds will be relatively light and out of the south this morning shifting to come out of the east in the afternoon.

Temperatures start out on the chilly side then will climb toward a high right near the 80 degree mark.

Tonight, skies will be partly cloudy with lows in the mid-40s.

Overnight tonight not long before dawn tomorrow, a cold front will push through. That will bring some breezy winds and colder air with high temperatures tomorrow expected to only be in the mid to upper 50s. The weekend however will recover nicely with above normal temps.

Join the Discussion - Post your commentJoin the Discussion!

Wednesday warms up with seasonal temperatures and lots of sun

Wednesday, September 26th, 2018 5:15am MDT

Wednesday warms up with seasonal temperatures and lots of sun. A very, pleasant early fall day ahead for Thornton. We’ll see lots of those gorgeous, blue skies above with temperatures right close to average for this time of year.

The day starts out with a few clouds but those will soon disappear leaving sunny skies for the majority of the day. Winds will be light and out of the southeast, overall conditions calm and dry.

The average high temperature for today’s date is 74 degrees and we should come within a couple of degrees of that.

Tonight, skies will be mostly clear with an overnight low in the mid to upper 40s.

Join the Discussion - Post your commentJoin the Discussion!

Thornton’s Tuesday to feature much cooler temperatures courtesy of an overnight cold front

Tuesday, September 25th, 2018 5:16am MDT

A second reinforcing cold front moved through this morning and that is going to bring a swing in temperatures. In fact, Thornton will be seeing its first day with below normal temperatures in more than two weeks.

The day starts out with some cloud cover but much of that will clear leaving mostly sunny skies for most of the day. Winds will be just slightly breezy and out of the northeast but nothing too intrusive.

As for temperatures, we should see a high in the mid-60s. Average for today’s date is 75 degrees and this will be the first time since September 7th we haven’t had a high above normal.

Tonight, skies will be partly clear and temperatures a bit chilly with lows in the low 40s.

Join the Discussion - Post your commentJoin the Discussion!

Cooler temperatures, slight chance for showers start Thornton’s workweek

Monday, September 24th, 2018 5:08am MDT

The promised change in the hot weather of the past couple of weeks is here. The first of two cold fronts has arrived and a second comes through tonight.

For today, we will see some cloud cover above throughout the day with some clearing mid-day then more clouds later in the afternoon.

The colder air that has been ushered in will keep temperatures closer to normal with our high expected to reach the upper 70s.

The afternoon brings just a slight chance for a shower. If any do develop, they are not expected to amount to much.

Tonight, partly clear skies will be above with lows in the mid-40s. The second front will push through after dark and that will bring some breezy winds as we get close to midnight and lasting into the pre-dawn hours tomorrow.

Looking ahead, even cooler weather is expected for much of the rest of the week. Check out the extended weather forecast here.

Join the Discussion - Post your commentJoin the Discussion!

September 23 to September 29: This week in Denver weather history

Sunday, September 23rd, 2018 3:35pm MDT
This week in Denver weather history

September 23 to September 29: This week in Denver weather history

While typically the last week of September is calm, that isn’t always the case. In our look back at this week in Denver weather history we see damaging wind, dangerous lightning and September’s biggest snowfall on record in the Mile High City.

From the National Weather Service:

23

In 1873…north to northwest winds blowing almost a gale spread clouds of dust and sand into the city during the afternoon and evening. From the roof of the weather observer’s building…houses a few hundred yards away were not visible and not even the sky could be seen through the clouds of sand. The wind reached sustained speeds of 35 mph…but only 28 mph was registered for any one hour.

In 1977…wind gusts from 50 to 80 mph were reported along the foothills. A northwest wind gust to 53 mph was recorded at Stapleton International Airport.

23-24

In 2000…the first snowstorm of the season brought heavy snow to areas in and near the foothills. While the heaviest snow fell north of metro Denver…6 inches were measured in Boulder…4 inches at both Castle Rock and Morrison…but only 0.2 inch at the site of the former Stapleton International Airport where most of the precipitation fell as rain. At Denver International Airport where drizzle and rain fell on the 23rd… Snowfall during the early morning of the 24th was estimated at 2.1 inches due to melting. The foothills west of Denver received more snow with 10 inches measured at conifer…9 inches 11 miles southwest of Morrison… 8 inches atop Crow Hill…7 inches at Chief Hosa…and 5 inches at Ralston Reservoir.

24

In 1901…northwest winds were sustained to 50 mph with gusts as high as 57 mph in the city.

In 1932…thunderstorm rainfall of only 0.11 inch was the only measurable precipitation for the month that year in the city.

In 1986…a very strong wind storm roared across metro Denver. Boulder was hit hardest. Winds peaked to 131 mph at the National Center for Atmospheric Research. This is thought to be the highest wind gust ever recorded in Boulder during September. A wind gust to 118 mph was clocked on Davidson Mesa and to 92 mph near Niwot. Gusts of 70 to 80 mph were common over all of Boulder where an estimated 70 to 90 large trees were uprooted. About a dozen of them hit cars. Two walls of a building under construction were toppled and solar panels were blown off a house. Traffic lights and power lines were downed. Damage to power equipment alone was estimated at 100 thousand dollars. Wind gusts to 87 mph at Jefferson County Airport damaged two planes. A woman was seriously injured in Boulder. She suffered a fractured skull when struck by a falling tree limb. Trees were also downed in Louisville and Lafayette. West wind gusts to 45 mph were recorded at Stapleton International Airport.

25 » Click here to read the rest of September 23 to September 29: This week in Denver weather history

Join the Discussion - Post your commentJoin the Discussion!