Category Archives: Thornton Weather

Time to “fall back” as Daylight Saving Time ends Sunday, November 5

Daylight Saving Time
The United States returns to Standard Time at 2:00am Sunday as Daylight Saving Time comes to an end.

The biannual ritual of changing our clocks to adjust for Daylight Saving Time occurs this weekend, providing yet another signal of the changing of seasons.  The United States will ‘fall back’ one hour at 2:00am Sunday morning as we return to Standard Time.

The ritual of changing our clocks twice a year can be met with some resistance as some people struggle to adjust their body’s internal clock.  Others actually like the return to standard time as they get to enjoy an extra hour of sleep.

The time change definitely has big effects on the dawning of daylight and how early it gets dark in the evening.

Sunrise on Saturday occurs at 7:31am but on Sunday it will be at 6:32am. Similarly, sunset will occur at 5:54pm on Saturday but on Sunday the sun will disappear over the horizon at 4:53pm.

For many this means that when they get home from work it will now be dark and outdoor activities will be significantly curtailed as a result.

Arizona and Hawaii are the only states that do not observe Daylight Saving Time and remain on Standard Time year round.    The U.S. territories of Puerto Rico, American Samoa, Guam, Northern Mariana Islands, and the United States Virgin Islands also do not observe the event.

It won’t be all that long though before Daylight Saving Time returns.  On March 10, 2024 we will ‘spring forward.’

Daylight Saving Time Schedule

The mandated beginning and end of Daylight Saving Time has changed in the United States over the years.

The most recent schedule was set by the Energy Policy Act of 2005 and took effect in 2007.  We now ‘spring forward’ to begin Daylight Saving Time on the second Sunday in March and ‘fall back’ with the return to Standard Time on the first Sunday in November.

Daylight Savings Time Dates

Year DST Begins 2 a.m.
(Second Sunday in March)
DST Ends 2 a.m.
(First Sunday in November)
2023 12 March 2023 5 November 2023
2024 10 March 2024 3 November 2024
2025 9 March 2025 2 November 2025
2026 8 March 2026 1 November 2026
2027 14 March 2027 7 November 2027
2028 12 March 2028 5 November 2028
2029 11 March 2029 4 November 2029

October 2023 top shots: Monthly photo slideshow

The annular solar eclipse as seen from southern Utah. (Diana Mauzy)
The annular solar eclipse as seen from southern Utah. (Diana Mauzy)

October in Thornton can bring a wide variety of weather conditions, perfect for the photographer in all of us.

The month brings the changing of the colors at Colorado’s lower elevations and it is also is typically when we see our first freeze and first snow.

Couple those facts with our usual widely varying landscapes and wildlife and we have a month that is sure to bring in plenty of photo opportunities.

  • Slideshow updated October 31, 2023
  • 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.

[flickr_set id=”72177720311994744″]

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!

Denver sets new record high temperature for October 20

Record High Temperature

We knew it was going to be unusually warm today and Mother Nature did not disappoint. In fact, the Mile High City broke a 73 year old record.

As measured at Denver International Airport, Denver’s high temperature today topped out at 86 degrees. This easily bested the previous record high for October 20th of 83 degrees set in 1950.

Here in Thornton, we lagged Denver much of the day but in the end, managed an extra degree above them, topping out at 87 degrees.

We will cool down about 10 degrees for the balance of the weekend. Conditions will remain dry and calm.

Thornton’s October 2023 preview: Generally calm conditions with our first freeze and snow

Thornton, Colorado October weather preview.With the first full month of fall here, October usually brings one of the quietest weather months in the Denver area with plenty of mild, sunny days and clear, cool nights.

October is historically the second sunniest month and conditions are generally calm.

However we also will usually see our first taste of winter during the month with the first freeze and first snowfall of the season.  Temperatures as well will start to drop and by the end of the month the average nighttime lows are below freezing.

For complete details on our historical October weather and what we can expect in the coming month, read our complete October weather preview here.

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September 2023 weather recap: Another warm, wet month

September 2023 Temperature Summary for Thornton, Colorado.
September 2023 Temperature Summary for Thornton, Colorado.

For the third month in a row, September brought above average temperatures and above average precipitation to Thornton. The month was, however, lacking of much drama making for a pretty quiet month.

Thornton’s average temperature for the month came in at 66.2 degrees. That was a good bit above our running 17-year average of 64.0 degrees. Temperatures ranged from a high of 100 degrees on the first down to 43 degrees on the 16th and 25th.

Denver, as measured at Denver International Airport, saw even warmer temperatures. The Mile High City’s average temperature was 68.0 degrees, 3.2 degrees above their September average. It tied Denver’s record for the 8th warmest September on record (since 1872).

In terms of precipitation, Thornton’s September came in at a healthy 2.47 inches. That was nearly an inch above our 17-year running average for the month of 1.49 inches. Much of that, however, came in a single afternoon deluge on the 14th that dumped 1.90 inches of rain.

Denver saw considerably less precipitation (as measured at DIA) with a mere 0.67 inches falling in their bucket. That was well below the Mile High City’s September average of 1.35 inches.

No snowfall was recorded in Thornton or Denver for the month.

Click here to view Thornton’s complete September 2023 climate summary report.

September 2023 Precipitation Summary for Thornton, Colorado.
September 2023 Precipitation Summary for Thornton, Colorado.

Denver sets record high minimum for October 1

Record High Temperature

Our mild days of late have helped keep the nights relatively warm and last night we saw our warmest night for the date.

As measured at Denver International Airport, the Mile High City saw a low of 58 degrees. This sets a new record high minimum for October 1, besting the previous mark of 57 degrees set in 2005.

Here in Thornton, the breezy winds kept us even warmer with a low of 60.6 degrees.

Denver sets record high temperature for September 30

Record High Temperature

We have enjoyed much warmer than normal temperatures this past week and today, we were warm enough to set a record high.

As measured at Denver International Airport, the Mile High City topped out at 91 degrees. This bests the previous record high temperature for September 30th of 90 degrees set in 1980. This also is the hottest temperature seen this late in the year since record-keeping began in 1872.

Here in Thornton we were actually a bit cooler with a high of 89.3 degrees.

September 2023 top shots: Monthly photo slideshow

An impressive storm cell moves through Thornton on September 14, 2023. (Katie Cox)
An impressive storm cell moves through Thornton on September 14, 2023. (Katie Cox)

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, 2023
  • 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.

[flickr_set id=”72177720311209631″]

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!

Thornton’s September 2023 preview: Usually one of the most pleasant months of the year

Following an August that was unseasonably warm, we find ourselves heading into September hoping for relief.  The month can bring plenty of rain and even our first snow of the season but more often than not, it is one of the most pleasant along the Colorado Front Range.

As temperatures start to drop, September usually reminds us that summer is at an end and fall is now here. Sunshine is predominant though as the month actually has the highest percentage of sun out of any month. Sunny days and clear, cool nights are the standard weather pattern for the month.

The month can bring extremes however.  We will of course forever remember 2013’s devastating floods brought on by record-setting rain.  Longtime residents might remember September 1971 which brought over 17 inches of snowfall.

Get a complete look at September’s weather and more details as to what we can expect this year here.

Denver ties record high minimum for September 2

Record High Temperature

Following on yesterday’s record high temperature, today’s low end did not get particularly cool and, in fact, tied a record.

As measured at Denver International Airport, the Mile High City’s low temperature for September 2 came in at 67 degrees. This tied the record for warmest low temperature for the date last set in 1939.

Here in Thornton, we cooled down to far more normal levels. Our low for the date was 61.7 degrees.