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.
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Thornton’s September this year was relatively benign and lacking much drama although it was a bit of a rollercoaster. Temperatures had their large swings and we saw a couple of days with healthy precipitation.
The month started out slightly cooler than normal on the first but then warmed over the next couple of days to a high of 93.8 degrees on the third.
Low pressure and a cold front brought an end to the heat and three days of cooler than normal temperatures arrived. Two of those three days combined to deliver more than a half inch of precipitation.
Warmer and drier weather returned for a few days before a more potent cold front pushed in. The 11th and 12th of the month brought our coldest days of the month. Low temperatures became quite chilly dropping to below freezing on the morning of the 13th as the system moved out.
Some rain fell on those days and while Denver recorded a trace of snow on the morning of the 12th, none was seen in Thornton.
We then rebounded nicely with 10 of the next 11 days seeing high temperatures above 80 degrees, many of those in the mid to upper 80s.
Things cooled down for the last three days as a strong system moved through. We recorded a significant 0.86 inches of rain on the 29th.
Thornton’s overall average temperature for the month was 62.6 degrees. This was a bit below the long term Denver average of 63.4 degrees. Out at the airport, it was as usual warmer with an average of 64.8 degrees.
Temperatures ranged from a high of 93.8 degrees on the 3rd down to a chilly low of 30.9 degrees on the 13th. Denver’s warmest day matched ours on the 3rd with a reading of 94 degrees while the Mile High City’s coldest reading of 33 degrees came on the 12th.
Denver saw one temperature record during the month. The record high minimum for September 25th was set with a reading of 56 degrees. This tied the record for the date last set in 1981.
In terms of precipitation, Thornton recorded 1.89 inches in the rain bucket for the month. Denver saw 1.79 inches. Both were well above Denver’s September average of 0.96 inches.
A daily rainfall record for Denver was set on the 29th when 1.01 inches fell at the airport. The old record of 0.96 inch for the date was set in 1959.
Thornton, Colorado’s September 2014 Temperature Summary. (ThorntonWeather.com)Thornton, Colorado’s September 2014 Precipitation Summary. (ThorntonWeather.com)
...THE DENVER CO CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2014...
CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1872 TO 2014
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 97 09/06/2013
09/05/2013
09/04/1995
LOW 17 09/29/1985
HIGHEST 94 09/03 91 3 97 09/06
09/05
LOWEST 33 09/12 35 -2 38 09/28
AVG. MAXIMUM 78.9 78.5 0.4 78.6
AVG. MINIMUM 50.6 48.3 2.3 54.2
MEAN 64.8 63.4 1.4 66.4
DAYS MAX >= 90 2 3.4 -1.4 7
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 0 0.8 -0.8 0
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 5.61 2013
MINIMUM T 1892 1944
TOTALS 1.79 0.96 0.83 5.61
DAILY AVG. 0.06 0.03 0.03 0.19
DAYS >= .01 9 6.5 2.5 10
DAYS >= .10 4 3.3 0.7 10
DAYS >= .50 1 0.6 0.4 3
DAYS >= 1.00 1 0.1 0.9 2
GREATEST
24 HR. TOTAL 1.01 09/29 TO 09/29 09/14 TO 09/15
SNOWFALL (INCHES)
RECORDS
TOTAL 17.2 1991
TOTALS T 1.3 -1.3 0
DEGREE_DAYS
HEATING TOTAL 91 125 -34 83
SINCE 7/1 98 141 -43 83
COOLING TOTAL 88 76 12 133
SINCE 1/1 701 764 -63 999
FREEZE DATES
RECORD
EARLIEST 09/08/1962
LATEST 06/08/2007
EARLIEST 10/07
LATEST 05/05
.....................................................
WIND (MPH)
AVERAGE WIND SPEED 9.4
RESULTANT WIND SPEED/DIRECTION 3/186
HIGHEST WIND SPEED/DIRECTION 33/350 DATE 09/09
HIGHEST GUST SPEED/DIRECTION 40/360 DATE 09/09
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.50
NUMBER OF DAYS FAIR 13
NUMBER OF DAYS PC 11
NUMBER OF DAYS CLOUDY 6
AVERAGE RH (PERCENT) 55
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 3 MIXED PRECIP 0
HEAVY RAIN 1 RAIN 6
LIGHT RAIN 9 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 2 SLEET 0
FOG 9 FOG W/VIS <= 1/4 MILE 1
HAZE 3
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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 October 1, 2014
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.
Click the play button below and sit back and enjoy the images.
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.
Sprinkles vs rain: Toddlers debate the weighty issue. (YouTube / Tara Willmott)
Certainly politics, religion and even climate change are hotly debated topics but as a video shows, toddlers can get pretty fired up about whether it is sprinkling or raining.
Posted to YouTube yesterday, the video portrays how quickly a discussion about the weather can get heated.
A young boy insists it is just sprinkling – because his mom told him it was – while two twin girls demand it is raining.
Strong words are exchanged and soon some poking ensues. The boy learns a harsh lesson about disagreeing with girls as one ‘pokes his heart’ and brings him to tears.
Like many debates likely conducted by these toddlers’ parents, in the end everyone insists they are right and no minds seem to be changed. 😉
The leaves in the high country are changing and certainly give meaning to the moniker ‘Colorful Colorado.’ (ThorntonWeather.com)
This time of year many folks head to the hills west of Denver in search of gold – fall foliage gold.
This year the changing of the colors seems to be occurring a bit earlier than normal and the last half of September should provide some great opportunities.
Where to go? Below are five of ThorntonWeather.com’s favorite ones near Denver. After that, we will tell you where you can find a great website that provides regular updates on viewing conditions.
I-70 Corridor – If you’re looking for the easiest route, then this one is for you. Simply head west on I-70 about 110 miles to Avon. Between Vail and Avon, both sides of I-70 are lined beautifully with aspen.
Rocky Mountain National Park – One of the most popular summer destinations in the state is of course also a prime spot to view aspen in all their glory. Once in the park on Trail Ridge Road, head toward Bear Lake. Glacier Gorge Junction provides a beautiful spot and you of course also get to enjoy all the splendor that Rocky Mountain National Park has to offer.
Peak to Peak Highway – This little road trip can be a dual purpose trip – gambling and fall foliage viewing! Take U.S. 6 through Clear Creek Canyon and then 119 through Blackhawk and Central Center. You can of course stop there if your wallet is fat enough and donate some money to the casinos. From there continue on 119 toward Nederland. Take highway 72 toward Ward and Allenspark. There you will find more golden aspen than you can imagine, all with the Continental Divide nearby.
Poudre Valley Canyon – Heading north on I-25 take Colorado 14 west and into Poudre Canyon and Roosevelt National Forest. As you continue west you will come very near timberline as you come to Cameron Pass. Amazing views abound!
Guanella Pass – This is a nice, relatively short drive from Denver. From C470 take 85 through Bailey and Conifer, a nice drive unto itself. When you come to the town of Grant, take the Guanella Pass Scenic and Historic Byway north to Georgetown. The air is pretty thin along the way as you climb in excess of 11,500 views through the Pike and Arapahoe National Forests. Fair warning – about 10 miles of the road is gravel but it is well maintained.
A couple other possibilities further from the Front Range:
Leadville / Aspen – From Denver take I-70 west to Copper Mountain and then Colorado 91 south over Freemont Pass to Leadville. Along the way there are plenty of viewing opportunities and Leadville is a nice little town to make a stop. From here you can take Highway 24 north back through Minturn and Vail. To extend the drive, take Highway 24 south to Colorado 82 and head toward Aspen. You can stop by the Maroon Bells in White River National Forest to view some of the most photographed mountains in Colorado.
Cottonwood Pass – From Denver take Highway 285 to Buena Vista. Head west on Main Street for seven miles then west on County Road 344 / Colorado 82. From there you start the climb up Cottonwood Pass with absolutely stunning views from the top. If you are up for it, you can continue down the west side of the pass into the Taylor Park area. Be forewarned though that the western half of the pass is unpaved and twisty.
If you do head out, be sure to send us your pictures for inclusion in our monthly photo slideshows!
Screen capture of video showing the aftermath of a tornado in Russia. (LiveLeak)
An amazing tornado video captured by a dash mounted camera was released on YouTube recently. Apparently taken in Russia on August 29, a surprised driver pulls out of his garage to discover a tornado ripping through the area.
The video begins with the driver backing out of the driveway in heavy rain. As the vehicle turns to face down the road, trees are being pummeled by strong winds and debris from other houses and nearby buildings flies through the air.
After sitting for a scant few seconds – likely struggling to comprehend Mother Nature’s fury that is erupting around him – the driver tries to go back to his garage. As he turns back, the garage collapses before his eyes.
Video added at the end shows extensive damage to cars and homes in the area.
It is believed the video is of an EF-3 rated twister that tore a 28 mile path through Kariyevo.
September snow in Denver? Possible and not at all unusual.
With a significant blast of cold air set to arrive this week, there is a chance for the Mile High City to see its first snowfall of the season. While such an event would be the first September snow of this millennium, it would hardly be unusual.
Looking back at Denver’s snowfall records dating to 1882, 45 Septembers have recorded a trace or more of snowfall. That means that out of 132 Septembers including this one, roughly one third of them have seen snow. Overall, the month averages 1.1 inches.
Of those 45 Septembers with snow, 17 were for only a trace. Twenty eight, or roughly 21 percent, had measurable snowfall of 0.1” or more.
Denver’s heaviest 24 hour September snowfall came between September 24 and 25 in 1936 when a hefty 15.0 inches fell to the ground. That snowfall contributed to 1936 taking its place as the second snowiest September on record.
For the entire month of September, some years saw rather significant totals. The top 10 September snowfall totals include:
17.2 inches in 1971
16.5 inches in 1936
12.9 inches in 1959
11.4 inches in 1895
8.7 inches in 1985
7.4 inches in 1995
6.5 inches in 1908
5.8 inches in 1961
5.5 inches in 1965
5.4 inches in 1993
The earliest snowfall on record occurred on September 3, 1961. On that date 4 inches of snowfall fell at the old Stapleton International Airport and the mercury dropped to a low of 33 degrees.
The last time Denver saw a September snow was on September 23, 2000 when 0.2 inches was recorded.
On average, we receive our first snow on October 19 so should snow fall, it will be well ahead of normal.
The cold that looks to come could very well bring an end to the growing season. The Mile High City’s first frost on average comes on September 20th followed by the average first freeze on October 7. Given that, a frost at the current time of the month is not that far off the mark. It does not appear at this moment we will see that first freeze – yet – but a frost is possible.
Following on a cooler and wetter than normal August, the month of September arrives and one can’t help but wonder if an early fall lies in wait as well. The month can bring 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 last year’s devastating floods brought on by record-setting rain. Longtime residents might remember September 1971 which brought over 17 inches of snowfall.
Periods of monsoonal moisture contributed to rain and clouds in August 2014. Coupled with the occasional cold front, the end result was a month that saw temperatures below normal and regular daily thunderstorms.
Thornton’s average temperature for the month came in at 68.2 degrees. This was more than four degrees cooler than Denver’s long term August average of 72.5 degrees. Out at Denver International Airport it was similarly cool with an average reading of 70.6 degrees.
Temperatures in Thornton ranged from a high of 94.4 degrees on the 17th down to a low of 47.6 degrees on the 30th. Only six days saw readings of 90 degrees or higher.
Denver’s warmest reading of 91 degrees occurred on the 17th and again on the 19th. Low readings of 52 degrees were seen on four days during the month. Four 90 degree days were recorded at DIA.
In terms of precipitation, Thornton measured 1.55 inches in the rain bucket over the course of the month. This was slightly below Denver’s August average of 1.69 inches.
The airport however fared better with 2.73 inches as many of the afternoon storms didn’t really get started until they were past Thornton.
Thornton, Colorado’s August 2014 Temperature Summary. (ThorntonWeather.com)Thornton, Colorado’s August 2014 Precipitation Summary. (ThorntonWeather.com)
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOULDER, CO
136 PM MDT MON SEP 1 2014
...................................
...THE DENVER CO CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2014...
CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1872 TO 2014
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 105 08/08/1878
LOW 40 08/26/1910
08/25/1910
08/24/1910
08/22/1904
HIGHEST 91 08/19 105 -14 99 08/20
08/17
LOWEST 52 08/31 40 12 52 08/09
08/30
08/25
08/24
AVG. MAXIMUM 83.8 87.2 -3.4 89.4
AVG. MINIMUM 57.4 57.9 -0.5 59.8
MEAN 70.6 72.5 -1.9 74.6
DAYS MAX >= 90 4 11.5 -7.5 16
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 0 0.0 0.0 0
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 5.85 1979
MINIMUM 0.02 1924
TOTALS 2.73 1.69 1.04 2.78
DAILY AVG. 0.09 0.05 0.04 0.09
DAYS >= .01 13 8.6 4.4 7
DAYS >= .10 5 4.3 0.7 2
DAYS >= .50 3 1.2 1.8 2
DAYS >= 1.00 0 0.3 -0.3 1
GREATEST
24 HR. TOTAL 1.45 08/25 TO 08/26
SNOWFALL (INCHES)
RECORDS
TOTAL 0.0
TOTALS 0.0 0.0
DEGREE_DAYS
HEATING TOTAL 2 10 -8 0
SINCE 7/1 7 16 -9 0
COOLING TOTAL 182 244 -62 308
SINCE 1/1 613 688 -75 866
FREEZE DATES
RECORD
EARLIEST 09/08/1962
LATEST 06/08/2007
EARLIEST 10/07
LATEST 05/05
..................................................
WIND (MPH)
AVERAGE WIND SPEED 8.9
RESULTANT WIND SPEED/DIRECTION 3/194
HIGHEST WIND SPEED/DIRECTION 48/320 DATE 08/25
HIGHEST GUST SPEED/DIRECTION 48/320 DATE 08/25
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.50
NUMBER OF DAYS FAIR 5
NUMBER OF DAYS PC 24
NUMBER OF DAYS CLOUDY 2
AVERAGE RH (PERCENT) 53
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 14 MIXED PRECIP 0
HEAVY RAIN 5 RAIN 4
LIGHT RAIN 17 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 1
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 6 FOG W/VIS <= 1/4 MILE 0
HAZE 1
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
August 7, 2014 – A butterfly enjoys blooming flowers in Thornton. (Bobby Hake)
August’s weather typically consists of warm daytime temperatures followed by afternoon and evening thunderstorms. Those storms provide excellent photo opportunities as do the various flora and fauna we see around this time of year.
Thornton’s spring and summer have been relatively wet allowing for a very lush, green landscape. Flowers are blooming and butterflies, bees and birds are all taking advantage of them. The near daily thunderstorms offer rain as well as lightning and sometimes hail. All make for prime photo subjects.
Slideshow updated August 31, 2014
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.
Click the play button below and sit back and enjoy the images.
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.
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.
Following on a cooler and wetter than normal August, the month of September arrives and one can’t help but wonder if an early fall lies in wait as well. The month can bring our first snow of the season but more often than not, it is one of the most pleasant along the Colorado Front Range.
