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Thornton Weather is the city's longest serving and most reliable source for truly local weather and news. The site was created by a Thornton resident to provide residents of our area with information about OUR weather, not the weather in Denver or DIA.

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Sunday in Thornton to offer up very cold temperatures, some overnight snow. Brrr! 🥶❄️🌡️ We are starting out the day with...
01/19/2025

Sunday in Thornton to offer up very cold temperatures, some overnight snow. Brrr! 🥶❄️🌡️ We are starting out the day with sub-zero temperatures and while it will warm up some, it will remain very cold. Tonight we throw in a bit of snow as well. Mostly sunny skies start us off but cloud cover will gradually increase through the day as the next system gets closer. By afternoon it will be mostly cloudy. Temperatures will “warm” up to highs in the mid teens. A Cold Weather Advisory remains in effect until Tuesday morning. This evening, after about 6:00pm, we may see a few flakes of snow. Chances increase closer to midnight through about 5:00am tomorrow. Look for around an inch of accumulation overnight. More: https://www.thorntonweather.com/

Thornton dropped into the single digits a bit ago, the first time this season. Tonight we will also likely register our ...
01/19/2025

Thornton dropped into the single digits a bit ago, the first time this season. Tonight we will also likely register our first sub-zero mercury reading of the season with forecast lows of -5 degrees. Live gauges: https://thorntonweather.com/live-weather.php

Saturday offers up light snow, very cold temperatures. A real taste of winter today and for the next couple of days. We ...
01/18/2025

Saturday offers up light snow, very cold temperatures. A real taste of winter today and for the next couple of days. We are waking up to 2.1 inches of light, fluffy snow and temperatures in the teens. Today, those temperatures will remain pretty steady during the daytime hours. It will be cloudy and some light snow will continue with minimal additional accumulations. A Winter Weather Advisory remains in effect until 5:00pm. This evening, snow ends and skies will gradually clear overnight. Temperatures will be dropping with lows below zero degrees. A Cold Weather Advisory kicks in at midnight and will be effect until Tuesday morning. While the snow did not amount to much (as we said it wouldn’t), the real story will be the cold. Should you venture out, please be careful be prepared. More: https://www.thorntonweather.com/

And so it begins...  A look at the temperature and wind charts clearly shows when the initial cold front made its push i...
01/17/2025

And so it begins... A look at the temperature and wind charts clearly shows when the initial cold front made its push into the area. We have been all downhill since. Snow is starting to fill in and will soon be arriving in our area. Roads are expected to become very slippery ice the initial snow melts on warm roads, then freezes. If you venture out, do be careful! NWS forecasts put us at 2 to 4 inches overnight, it may end up lighter than that. Winter Weather Advisory in effect now until 5:00pm tomorrow. You can keep an eye on those dropping temperatures with our live weather gauges here: https://www.thorntonweather.com/live-weather.php

Breaking: Cold Weather Advisory issued. After tonight's cold and snow, all eyes turn to the extreme cold to follow. As s...
01/17/2025

Breaking: Cold Weather Advisory issued. After tonight's cold and snow, all eyes turn to the extreme cold to follow. As such, the National Weather Service advisory will go in effect from midnight tomorrow night to Tuesday AM. Extremely cold air temperatures with dangerous wind chill temperatures are expected. If you venture out, you need to make sure you are properly prepared. All of the current advisories can be found here: https://www.thorntonweather.com/wxadvisory.php

On a cold, wet and blustery day, the new President of the United States prepared to take office.  He rode a horse to and...
01/17/2025

On a cold, wet and blustery day, the new President of the United States prepared to take office. He rode a horse to and from the Capitol that day and spoke on the steps of the building for nearly two hours – all without an overcoat or so much as a hat. The weather would be the death of that president and Mother Nature has played a role in other Inauguration Days since. Check out the fascinating history of how the weather has impacted the swearing in of new presidents: https://www.thorntonweather.com/blog/national-weather/weather-on-inauguration-day-can-play-a-factor-in-the-swearing-in-of-a-president/

Some good tips from the city for weathering the cold (pun intended).  ❄️🥶
01/17/2025

Some good tips from the city for weathering the cold (pun intended). ❄️🥶

The big chill set to arrive for Thornton’s weekend, will also offer up some snow. The Arctic blast we have been talking ...
01/17/2025

The big chill set to arrive for Thornton’s weekend, will also offer up some snow. The Arctic blast we have been talking about all week is working its way down to us now. When it arrives, temperatures will drop and we can expect to see some snow. Friday starts out nice enough with highs in the mid-40s by noon. However, by mid-afternoon, the initial cold front arrives and the mercury will start dropping. Snow looks to arrive between 4:00pm and 5:00pm, potentially creating some challenging conditions for the latter part of rush hour. Snow will continue overnight and temperatures will be dropping and potentially hitting the single digits by tomorrow morning. Saturday will be cloudy and very cold with highs only in the teens. Light snow is expected off and on throughout the day but with only minimal additional accumulation. There is a Winter Weather Advisory in effect for the period from 4:00pm this afternoon to 5:00pm tomorrow evening. The National Weather Service is warning that 3 to 7 inches of snow is possible during that time with Thornton being in the 4 to 6 inch range of their forecast. As we have been stating this week, this type of extreme cold system does have a reputation of failing to live up to snowfall forecasts. We tend to think Thornton will be at the low end of that range, possibly below. Saturday evening some light snow will be possible but it will end by midnight and skies will begin clearing. This will allow for very cold overnight temperatures, possibly below zero. Sunday will be the nicest day of the period but quite cold. Look for mostly sunny skies above and highs only in the teens. Sunday night, some light snow with minimal accumulation will be possible. Lows again may dip below zero. For Martin Luther King Jr Day, snow will end by about 9:00am and skies will clear. Conditions will then be calm but highs may top out only in the upper single digits. Monday night, with clear skies, temperatures will plummet to a good bit below zero.

Twenty four hours away from some big weather changes although you wouldn't know it from today's gorgeous weather. Everyt...
01/17/2025

Twenty four hours away from some big weather changes although you wouldn't know it from today's gorgeous weather. Everything is on track for a significant series of cold fronts that is going to send the mercury plummeting. By tomorrow evening, temperatures will have dropped below freezing and it may not be till Wednesday before they climb above the mark. As we posted earlier, a Winter Weather Advisory will be in effect from tomorrow evening to Saturday evening. The NWS is calling for 3 to 6 inches during that time period but as we have previously noted, systems that bring this kind of cold oftentimes underperform so we tend to lean toward the lighter side of that. If you venture out during the next few days, please be prepared for the cold and snow! More on our Winter Weather Briefing Page here: https://www.thorntonweather.com/winter-briefing.php

Breaking: Winter Weather Advisory issued. The advisory will be in effect from 4:00pm tomorrow to 5:00pm Saturday. This i...
01/16/2025

Breaking: Winter Weather Advisory issued. The advisory will be in effect from 4:00pm tomorrow to 5:00pm Saturday. This is the period when the bulk of the snow is expected along with nasty cold and wind. We will have more later this afternoon and evening.

As an Arctic blast prepares to descend on Thornton, a look at some of the records that may fall in the coming days. Our ...
01/16/2025

As an Arctic blast prepares to descend on Thornton, a look at some of the records that may fall in the coming days. Our station has been in operation for 18 years so we have a pretty good history to draw on to compare the cold to come versus what has been seen in the past. If we look at the forecast highs and lows for Saturday through Tuesday and compare it to the records for those dates, we see that some records are likely to be set. As it stands now, if the forecast holds true, Thornton would set six daily records for record low maximums or record lows. While certainly very cold, we would not quite set January or all-time records though. On our site we have a pretty cool series of pages that cover all of the daily and monthly records. As it has a tremendous amount of data, it can be a bit difficult to understand but once you get a feel for it, it is really kind of cool: https://www.thorntonweather.com/thornton-records.php

Thursday in Thornton offers up mild temps before the big chill arrives for the weekend. A beautiful winter’s day ahead f...
01/16/2025

Thursday in Thornton offers up mild temps before the big chill arrives for the weekend. A beautiful winter’s day ahead for us today with lots of sun and temps above average. That will, however, be tempered by the knowledge that bitter cold is lying in wait. Sunny skies will be above today throughout the daytime hours. Conditions will be calm and dry. Look for highs to reach the upper 50s, well above the average high for the date of 45 degrees. Tonight, skies remain clear until early tomorrow morning. Lows will be in the mid-20s. Our Arctic blast continues to be on target to arrive tomorrow afternoon / evening. With it, we fully expect to set some record cold temperatures and will see some snow. We’ll have a look at that at noon today so check back then. More: https://www.thorntonweather.com/

Yup, you can stick your head in the sand but that cold is still coming, like it or not. 🥶
01/16/2025

Yup, you can stick your head in the sand but that cold is still coming, like it or not. 🥶

With lots of sun above, Wednesday temperatures warm to near normal. A bit of warm before the cold as today will see the ...
01/15/2025

With lots of sun above, Wednesday temperatures warm to near normal. A bit of warm before the cold as today will see the mercury rise to near normal levels. This comes before an Arctic blast arrives late Friday that will send temperatures plunging. For today, sunny skies will be the rule throughout the daytime hours. Conditions will be calm and dry. Highs will top out near the average high for the date of 45 degrees. Tonight, skies will continue to be clear / mostly clear. Overnight lows will dip to around 20 degrees. Continuing to monitor the cold to come, little has changed as we prepare for a freezing blast to arrive Friday. Sub-freezing temperatures will be seen from Friday night through Tuesday. Overnight lows Saturday night through Monday night will likely be below zero. Some light snow will be possible during the period but it won’t be anything extraordinary. More: http://www.thorntonweather.com/

In case you were wondering... Yeah, that cold 🥶 for this weekend is still coming. Bundle up, or, better yet, just stay i...
01/15/2025

In case you were wondering... Yeah, that cold 🥶 for this weekend is still coming. Bundle up, or, better yet, just stay inside.

Sunset alert! 🚨
01/14/2025

Sunset alert! 🚨

Anyone get pics of the full wolf moon last night or this morning? Let's see them! When the sky was clear, you could even...
01/14/2025

Anyone get pics of the full wolf moon last night or this morning? Let's see them! When the sky was clear, you could even see Mars. Way fun show in the sky!

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