Denver Climatological Preview - November 2023

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A Preview of Denver's November Weather - Will it be a Fall Month or a Winter Month?

Typically November is a quiet weather month with plenty of nice, fall days but it can also turn wet with plenty of snow and moisture.  Just like Forest Gump’s proverbial box of chocolates, you never quite know what you are going to get.

November is a bit of a transitional one as we move from the relatively mild fall into colder, winter-like conditions. Cold fronts begin to dip down from the north with greater frequency and intensity giving the month a reputation of being the start of winter in Colorado.

Looking into the weather history books, we see that November is actually Denver’s second snowiest month, second only to March (April is third).  Historically we average 8.7 inches of snow during the month (based on 1981 to 2010 climate normals).

In 1994, November was the snowiest month of that year with 16.9 inches - over 12 inches of which fell within a 12 hour period on the 13th and 14th.  In 1991 we saw 29.6 inches of snow (the 2nd snowiest November) and the following year in 1992 we had 20.1 inches of snow (the 8th snowiest November).  Those examples though pale in comparison to the snowiest November on record which was in 1946 when a whopping 42.6 inches of snow fell! 

It isn't always that snowy though. November 2002 was at the time the 16th month in a row with below normal precipitation and the calendar year of 2002 marked the driest in Denver weather history. This pattern of below normal precipitation continued for 19 months through February 2003. Since 1882, one year (1949) recorded no snow, six more recorded only a trace of snow and four had less than one inch of snow.

Like the precipitation, temperatures can also vary widely during the month.  On the first of the month the average high temperature is 59 degrees but that drops to 46 degrees by the 30th. Average low temperatures start out at 31 and drip to a cold 19 degrees by the end of November. The overall average temperature for the month is 38.6 degrees with an average high for the month of 52.3 degrees and an average low of 24.9. 

In recent history, November 1999 finished as the second warmest November with an average temperature of 47.1 degrees.  But, a year later November 2000 finished as the second coldest November in Denver weather history with an average temperature of 28.9 degrees.  The coldest November on record?  In 1880 Denver had an icy 22.0 degree average.  The warmest occurred in 1949 with an average temperature of 50.9 degrees.

One little known fact…  November is the Denver's least sunny month, tying with May with only 64 percent sunshine.  September is the sunniest with sunshine 74 percent of the time. 

Denver's Coldest Novembers (mean temperatures)
22.0 degrees 1880
28.9 degrees 2000
29.8 degrees 1985
31.6 degrees 1929
32.3 degrees 1952

Denver's Warmest Novembers (mean temperatures)
50.9 degrees 1949
47.1 degrees 1999
46.2 degrees 1914, 1933
45.9 degrees 1927, 1981
45.6 degrees 1901, 1910, 1917

Denver's Snowiest Novembers
42.6 inches 1946
29.6 inches 1991
29.3 inches 1983
23.1 inches 1928, 1929
22.9 inches 1908

Denver's Least Snowiest Novembers
0.0 inches 1949
T inches 1884, 1899, 1901, 1905, 1917, 1939
0.3 inches 1883
0.5 inches 1885
0.8 inches 1900

Outlook for November 2023

The latest long range outlooks from the Climate Prediction Center would point to a mild month. The temperature outlook gives the Front Range an above average probability of seeing mercury readings above normal. In terms of precipitation, the outlook doesn’t point any particular direction giving us equal chances of seeing above, below and at normal levels.

For More Information:

Temperature Normals and Extremes for November

Monthly Temperature, Rainfall and Snowfall Extremes for November

NOVEMBER AVERAGE STATISTICS *
Normals & Means, 1981 - 2010
 
TEMPERATURE
AVERAGE HIGH 52.1
AVERAGE LOW 24.5
MONTHLY MEAN 38.3
DAYS WITH HIGH 90 OR ABOVE 0
DAYS WITH HIGH 32 OR BELOW 3
DAYS WITH LOW 32 OR BELOW 23
DAYS WITH LOWS ZERO OR BELOW 0* (* = AVG IS LESS THAN 1)
   
PRECIPITATION
MONTHLY MEAN 0.61 INCH
DAYS WITH MEASURABLE PRECIPITATION 5
AVERAGE SNOWFALL 8.7 INCHES (2ND SNOWIEST MONTH)
DAYS WITH 1.0 INCH OR MORE SNOWFALL 3
   
MISCELLANEOUS NOVEMBER AVERAGES
HEATING DEGREE DAYS 801
COOLING DEGREES DAYS 0
WIND SPEED (MPH) 8.2
WIND DIRECTION SOUTH
DAYS WITH THUNDERSTORMS 0* (* = AVG IS LESS THAN 1)
DAYS WITH DENSE FOG 1
PERCENT OF SUNSHINE POSSIBLE 64
   
NOVEMBER EXTREMES
RECORD HIGH 80 DEGREES ON 11/08/2000
RECORD LOW -18 DEGREES ON 11/29/1877
WARMEST 50.9 DEGREES IN 1949
MAXIMUM/MINIMUM COOLING DEGREE DAYS 0/0 (NONE EVER RECORDED)
COLDEST 22.0 DEGREES IN 1880
MAXIMUM HEATING DEGREE DAYS 1283 IN 1880
MINIMUM HEATING DEGREE DAYS 425 IN 1949
WETTEST 3.21 INCHES IN 1946
MAXIMUM 24 HOUR RAINFALL 1.29 INCHES IN 1975 (8-9)
DRIEST T IN 1949, 1901, 1899
SNOWIEST 42.6 INCHES IN 1946
MAXIMUM 24 HOUR SNOWFALL 17.7 INCHES IN 1946 (2-3)
LEAST SNOWIEST 0.0 IN 1949
TRACE AMOUNTS RECORDED IN 1939, 1917, 1905, 1901, 1899, 1884

* Historical weather statistics gathered from the National Weather Service's Denver / Boulder forecast office data archives.