All Weather News

Denver’s Fluctuating Fall Feel

26 Sep 2017, 7:02 pm

The fall season brings a great variety of weather to the Mile High City of Denver and the Front Range of Colorado.  Some years the heat of summer stands its ground and sticks around well into the fall.  Other years can see killing frosts before October even starts. Some years the season amuses, with roller coaster temperatures still deciding on which way to lean between summer and winter.  Then there are autumns when the area surrenders to the impending winter only to be surprised by stretch of more temperate conditions. This situation is generally referred to as “Indian Summer”.  The National Weather Service defines Indian Summer as weather conditions that are sunny and clear with above normal temperatures, occurring late-September to mid-November.  It is usually described as occurring after a killing frost.

The sense of urgency is also apparent this time of year as people, plants and animals prepare for Jack Frost, Ol’ Man Winter and the colder conditions to come.

So just when will Denver and the surrounding areas see freezing temperatures and its first snow this fall?  Those two occurrences sometimes go hand in hand, as to see snow in the Mile High City you need those colder temperatures that could bring the first freeze too.  Of course the first freeze of the season may go it alone with a “no show” for the snow.

NOAA’s Climate Prediction Center’s long range temperature and precipitation outlooks trend toward a warmer and drier scenario (than average) over the next few months for Colorado.

This could push back the wintery conditions a bit this year. September this year looks to be  in the clear when it comes to freezing temperatures and snow but that hasn’t always been the case.

The earliest first freeze recorded in Denver was back on September 8, 1962 and the earliest snowfall on record occurred on September 3, 1961.  That date 4 inches of snow was recorded at the old Stapleton International Airport with a morning low of 33 degrees.

For Denver on average, the first frost of the season is October 7th and the average first snowfall is October 18th.

First Freeze Last 10 Years:

October 6, 2016

October 28, 2015

October 3, 2014

October 4, 2013

October 5, 2012

October 17, 2011

October 27, 2010

October 2, 2009

October 13, 2008

October 8, 2007

First Measurable Snow Last 10 Years:

November 17, 2016

November 5, 2015

November 11, 2014

October 18, 2013

October 5, 2012

October 25, 2011

November 15, 2010

October 21, 2009

November 14, 2008

October 22, 2007


Meteorologist Mike Morrison

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