28°F
Thornton, Colorado, USA
UpdatedSun, 18-Feb-2018 3:45am MST 
 

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


Denver sets high temperature record for October 25

Wednesday, October 25th, 2017 5:27pm MST

Record High TemperaturesWe figured we would tie or just break the high temperature record today and in fact we pretty much crushed it.  If you liked the warmth, don’t get too excited though as a big change is on the way.

The Mile High City’s official high temperature, as measured at Denver International Airport, topped out at 84 degrees today at 3:52pm.  This easily bested the previous record for the date of 80 degrees set in 2014, 2007 and 1959.  Average for today’s date is 62 degrees.

Here in Thornton, we were just a bit warmer with a high of 85 degrees coming at 3:07pm.

  • Stay up to date with Thornton’s weather: Be sure to ‘like’ us on Facebook, follow us on Twitter and add us to your Google+ circles.

That warmth though will soon be nothing but a memory as much colder weather is on the way tomorrow.  The high temp tomorrow will likely come at midnight and from there it will downhill.  By tomorrow evening the mercury readings will be at or even below 40 degrees.

Snow, unfortunately, will not amount to much from this system.  Current indications point to maybe some rain by late morning tomorrow followed by some snow in the afternoon and evening. Accumulations will likely be less than half an inch.

Details in our extended forecast here.

Join the Discussion - Post your commentJoin the Discussion!

Wednesday to bring potentially record-setting warmth, lots of sun

Wednesday, October 25th, 2017 5:16am MST

Thornton is set to enjoy an extraordinarily mild late October day today. As is typical of Colorado though, this is only the calm before the storm with cold and snow expected tomorrow.

For today sunny skies start us out and other than a few high, whispy clouds, expect a healthy dose of beautiful blue skies above. Winds will be relatively light and out of the south this morning shifting to come from the west in the afternoon.

The main story of course will be the temperatures. The record high for today’s date is 80 degrees, last set in 2007, and there is a very good chance we tie that mark, perhaps exceed it.

Tonight, skies will be mostly clear with low temps in the mid-40s.

After today, the focus shifts to the storm system set to arrive tomorrow morning. While it will be a big change, the system isn’t really going to amount to anything extraordinary. Temperatures will be much cooler but snowfall will be limited to less than an inch.

Until that comes, enjoy today’s warmth! More of a look ahead can be found in our extended forecast here.

Join the Discussion - Post your commentJoin the Discussion!

Meet the firefighters from American Samoa who sing to stay motivated on the job

Wednesday, October 25th, 2017 4:02am MST

More than 80 wildfires have raged across northern California this year, killing 42 people and causing nearly $1 billion in damage. Fire crews from all across the country are deployed to help during peak wildfire season each year. » Click here to read the rest of Meet the firefighters from American Samoa who sing to stay motivated on the job

Join the Discussion - Post your commentJoin the Discussion!

Congress approves $36.5 billion disaster aid for Puerto Rico, wildfires and hurricane relief

Tuesday, October 24th, 2017 6:00pm MST

WASHINGTON — Congress gave final passage Tuesday to $36.5 billion in disaster aid for Puerto Rico and several states impacted by a particularly destructive hurricane season. The package includes $576.5 million to address the devastating wildfires in California and the West. » Click here to read the rest of Congress approves $36.5 billion disaster aid for Puerto Rico, wildfires and hurricane relief

Join the Discussion - Post your commentJoin the Discussion!

Tuesday to offer lots of sun, calm conditions, seasonal temps

Tuesday, October 24th, 2017 4:52am MST

Tuesday to offer lots of sun, calm conditions, seasonal temps. A pretty typical day of fall weather for Thornton today. We will enjoy sunny skies above and temperatures right near average for the date.

The day starts with clear skies and other than a few thin, high clouds here and there, can expect plenty of blue sky above. Winds will be light, conditions calm and dry. Temperatures will top out today in the low 60s, right near the average for the date of 62 degrees.

Overnight today, skies remain mostly clear. It will again get chilly with lows in the upper 30s.

Join the Discussion - Post your commentJoin the Discussion!

Thornton’s workweek starts with seasonal temps, dry conditions

Monday, October 23rd, 2017 4:54am MST

The passage of a trough has mixed things up a bit with our weather. Temperatures will be cooler today, but seasonal, and we start out with a good bit of cloud cover.

Partly clear skies will be seen early with high clouds. Coverage will ease gradually throughout the day leading to mostly sunny skies by late afternoon into the evening. Temperatures will be topping out right near the average for the date of 62 degrees, perhaps a couple of degrees above that.

Tonight, with the clearing skies, we will see it get quite chilly. Expect overnight lows to the mid-30s.

Join the Discussion - Post your commentJoin the Discussion!

October 22 to October 28: This week in Denver weather history

Sunday, October 22nd, 2017 6:40am MST
This Week In Denver Weather History

October 22 to October 28: This Week in Denver Weather History

It’s not quite Halloween but leading up to the holiday we see plenty of ‘scary’ weather in our look back at this week in Denver weather history. High winds are relatively commonplace and so too are major snowstorms. One recent event in 1997 dumped 14 to 31 inches of the white stuff on the metro area.

From the National Weather Service:

18-23

In 2003…an extended warm spell resulted in 5 new temperature records. The high temperature of 84 degrees on the 18th equaled the record high for the date. High temperatures of 86 degrees on the 19th…83 degrees on the 21st…and 84 degrees on the 22nd were record highs for the dates. Low temperature of 49 degrees on the 23rd was a record high minimum for the date. Low temperatures during the period were in the 40’s and lower 50’s.

19-23

In 1906…heavy snowfall totaled 22.7 inches in the city over the 5 days. Rain changed to snow on the evening of the 19th…and snow continued through the late afternoon of the 23rd. The heaviest amount of snowfall…16.0 inches…fell from 8:00 pm on the 20th to 8:00 pm on the 22nd. The most snow on the ground was 13.3 inches on the evening of the 23rd. This was the first snow of the season and the only snow of the month. Winds during the storm were from the north at sustained speeds of 20 to 30 mph each day. Temperatures during the storm were generally in the 20’s.

22

In 1878…winds were sustained to 42 mph.

In 1887…the first measurable snow of the season occurred… Ending the longest snow-free period in Denver…232 days… Since the last snow on March 5th.

In 1947…the first snow of the season totaled only 1.6 inches. Post-frontal north winds caused temperatures to plunge from a high of 60 degrees at midnight to a low of only 30 degrees 24 hours later. This was the only snow of the month.

In 1985…high winds gusting from 60 to 80 mph buffeted the Front Range foothills. The strongest reported wind gust was 89 mph in eastern Boulder. A treehouse east of Boulder was set on fire by a downed power line. Two people in Boulder were injured. A woman broke her arm when the strong winds knocked her to the ground. A carpenter in the city suffered a severely cut hand while he was trying to repair a roof that was being torn from a building. At Stapleton International Airport…northwest winds gusted to 41 mph.

In 2001…west-northwest winds gusting as high as 54 mph warmed the temperature to a high of 70 degrees at Denver International Airport.

22-23

In 1914…post-frontal rain changed to snow. Precipitation totaled 2.72 inches…most of which was in the form of moist snow which melted as it fell in the business section of the city. About 3 inches of snow was measured on lawns in the residential areas on the morning of the 24th. Official snowfall totaled only 0.4 inch downtown… But an estimated 8.0 inches of snow melted as it fell. North to northeast winds were sustained to 29 mph with gusts to 30 mph on both days.

In 1975…a vigorous cold front moving across metro Denver followed by strong northeast winds gusting to 52 mph produced billows of blowing dust and plunged the temperature 21 degrees in an hour. The surface visibility was reduced to 1/4 mile in blowing dust at Stapleton International Airport. The temperature cooled from a daily record high of 81 degrees to a low of 38 degrees by day’s end. The first snowfall of the season totaled 2.7 inches on the 23rd. This was the only measurable snow of the month at Stapleton International Airport.

In 1995…heavy snow fell on the Palmer Ridge south of Denver and in the foothills west of Denver where snow amounts ranged from 4 to 8 inches. Sedalia…south of Denver… Received 8 inches of snow. Winds strengthened on the plains and produced blizzard conditions…reducing surface visibilities to less than 1/4 mile. I-70 was closed from just east of Denver at Gun Club Road to the Kansas border. Ten inches of snow fell at Strasburg east of Denver where north winds at sustained speeds of 35 to 45 mph with gusts as high as 60 mph produced 2 to 4 foot drifts. Snowfall totaled only 2.2 inches at the site of the former Stapleton International Airport. North winds gusted to 51 mph at Denver International Airport.

23

In 1876…skies were fair…but winds were sustained to 48 mph.

In 1942…a major storm dumped 10.2 inches of snow over downtown Denver. Post-frontal northeast winds were sustained to only 13 mph.

In 1955…the first snowfall of the season and the only measurable snow of the month dumped 4.1 inches of snow on Stapleton Airport. This was the single heaviest October snowfall in 13 years since 1942. The storm also brought the first sub-freezing temperatures of the season when the temperature dipped to a low of 25 degrees.

In 1956…southwest winds gusted to 53 mph and produced some blowing dust at Stapleton Airport.

In 1967…a northwest wind gust to 51 mph was recorded at Stapleton International Airport. In downtown Boulder… Winds were sustained at 20 mph with gusts in excess of 40 mph.

In 1981…strong winds occurred in the foothills. Wind gusts to 70 mph were reported at Wondervu.

23-24

In 1887…the first measurable snowfall of the season totaled 3.1 inches. North winds to 20 mph were recorded on the 23rd. This was the only measurable snow of the month.

In 1932…post-frontal snowfall from the late evening of the 23rd continued through the late afternoon of the 24th and totaled 6.2 inches. Southeast winds were sustained to 25 mph with gusts to 26 mph on the 23rd. Temperatures cooled from a high of 68 degrees on the 23rd to a low of 25 degrees on the 24th…the coldest reading of the month that year. Many trees that had not shed their leaves became heavily laden by the wet snow. Many branches were broken… And a few trees toppled under the weight of the snow. The landscape became one of rare beauty.

» Click here to read the rest of October 22 to October 28: This week in Denver weather history

Join the Discussion - Post your commentJoin the Discussion!

Winter Weather Preparedness Week recap

Saturday, October 21st, 2017 4:30am MST
Winter Weather Preparedness Week concludes. Are you ready for winter?

Winter Weather Preparedness Week concludes. Are you ready for winter?

As we have talked about this week, winter weather can be dangerous and downright deadly.  However, being prepared helps to ensure that you and your family remain safe when the snow starts to fly or other winter weather conditions occur.

It is very easy to ignore the dangers of weather – no matter the season – and find yourself saying, “I wish I would have….” Now is the time to think about how you can prepare for these conditions, before it is too late and you find yourself wishing you had.

In this sixth and final message in a series on Winter Weather Preparedness from the National Weather Service, ThorntonWeather.com reviews the topics we covered this week and directs you to the previous articles and other resources to help you get ready.

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE BOULDER CO
ISSUED BY NATIONAL WEATHER SERVICE PUEBLO CO
600 AM MDT SAT OCT 21 2017

Enjoy the great outdoors in Colorado this winter season, but watch the weather.

The National Weather Service issues a variety of winter weather, outlooks, watches, warnings, and advisories, covered earlier during this Winter Weather Preparedness Week.  Safety tips were also passed along.

» Click here to read the rest of Winter Weather Preparedness Week recap

Join the Discussion - Post your commentJoin the Discussion!

Avalanche safety – Be prepared or die

Friday, October 20th, 2017 6:00am MST
Avalanches claim lives every year in Colorado. Before you head to the mountains, be sure you are prepared! (Wikimedia Commons)

Avalanches claim lives every year in Colorado. Before you head to the mountains, be sure you are prepared! (Wikimedia Commons)

As snow starts to fall, many Coloradoans and out of state visitors will take advantage of it and head to the mountains for a variety of outdoor activities.  Whether skiing, snowshoeing, or hiking, anyone who spends time outdoors in the high country needs to be aware of the danger avalanches present.  On average six people die in Colorado every year from avalanches and being prepared is an essential survival skill.

In this fifth in a series on Winter Weather Preparedness from the National Weather Service, ThorntonWeather.com helps you understand avalanches, where they occur, how to protect yourself and where to go for more information.  If you are headed to the high country, be sure to check out our Avalanche Information & Forecast page.

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
600 AM MDT FRI OCT 20 2017

Avalanches – Are you prepared?

Thousands of avalanches occur each winter in the mountains of Colorado. With the enormous popularity of winter sports in Colorado, this poses a risk to skiers, snowboarders, snowmobilers, and people traveling in the backcountry. On average 6 people die in Avalanches in the state of Colorado every year. Anyone who travels into the high country in the winter should be prepared for avalanches And know how to avoid them.

The most important thing to know is how to get information on current avalanche conditions. Check the Colorado Avalanche Information Center website at http://avalanche.state.co.us/ for the current avalanche forecast and the National Weather Service website http://www.weather.gov for the current weather forecast in your area. Knowing the current and future conditions will help you make good decisions in the backcountry.

A little information about avalanche safety can go a long way. Most avalanches occur during or just after snowstorms on a slopes between 30 to 45 degrees. A significant snowfall may result in an unstable snowpack. By waiting at least 36 hours after a big snow or wind storm before you go into the mountains the Snow may become more stable and less likely to avalanche. If you stay in valleys away from avalanche chutes, in stands of dense trees, or on gentle slopes you can decrease the risk of being caught in an avalanche.

If you are a skier or snowboarder at a commercial ski area the risk from avalanches is lower than in the backcountry. Ski patrols work to reduce the chance of an avalanche on open slopes. Respect the rules of the ski area, stay on open slopes, and do not stray out of bounds or into closed areas. The avalanche risk is higher outside of the ski area boundaries.

If you want to enjoy the great outdoors in areas prone to avalanches…You can reduce the danger by following a few simple rules:

  • Check the current avalanche forecast to get information on current and forecast avalanche conditions. Also check the latest weather forecast to see if conditions are likely to change while you are in the backcountry.
  • Never travel alone. Always have one or more companions. Even small avalanches can be fatal. If you are alone and get trapped, you may not be found until spring.
  • If crossing a slope that may be prone to avalanches, do it one person at a time. You want to minimize the impact on your party if an avalanche is accidentally released.
  • In avalanche country, all members of your party should carry avalanche rescue equipment including an avalanche beacon, shovel and probe pole. This increases your chances of a successful rescue and finding your friends alive.

Avalanche conditions in Colorado are monitored and forecasted by the Colorado Avalanche Information Center, CAIC. You can get more information on avalanches, avalanche forecasts, avalanchesafety and request a safety class from CAIC. Go to their website…Http://www.colorado.gov/avalanche or call the center at 303-499-9650.

Winter Weather Preparedness Week continues through Saturday. Now is the time to get prepared for winter so you can safely enjoy the outdoors and travel safely when the snow flies.

Join the Discussion - Post your commentJoin the Discussion!

Thornton’s weekend to offer varying temperatures, some wind

Friday, October 20th, 2017 5:20am MST

A little bit of a mixed bag of weather for the three day period. We start out very mild but then a cold front cools things down quite a bit Saturday which will then be followed by a nice warmup Sunday.

For Friday look for sunny to mostly sunny skies throughout the day. Temperatures will again be quite warm with highs pushing toward the upper 70s. The afternoon may see some gusty winds. Tonight, partly cloudy skies will be above with lows dipping to the low 40s.

A fast moving cold front pushing through tonight and that will mix things up a bit for Saturday. Some cloud cover will be seen early then the afternoon should bring more sun. Temperatures will be a good bit cooler with highs in the mid to upper 50s. The bigger story tomorrow will be the winds which will be pretty breezy throughout the daytime hours. Overnight Saturday into Sunday morning skies will be mostly clear and temperatures a bit chilly with lows to the mid-30s.

Sunday rebounds quite nicely with sunny skies and calm conditions. Highs will top out right near the 70 degree mark.

Have a great weekend of course head over to http://www.thorntonweather.com/ for all the latest.

Join the Discussion - Post your commentJoin the Discussion!