Denver Weather in December

December is the coldest month for Denver, Colorado. That means temperatures below 0 degrees Fahrenheit (-18 °C) are possible for a few nights.

This page gives detailed information on the typical December temperature, precipitation, snow, sun, humidity, wind and storms for Denver. The numbers here are historical averages based on climate data gathered in the Denver community of Stapleton.

Temperature

46 °F	December average high	8 °C
18 °F	December average low	-8 °C

Denver's coldest days of the year usually occur from December 14th to 28th when the daily maximum temperature averages 45 degrees Fahrenheit (7 degrees Celsius) and the minimum averages 17 °F (-9 °C).

13 days	50 °F max. or more (10 °C)
18 days	20 °F min. or less (-8 °C)

Denver averages 4 days in December when the thermometer reaches into the 60s °F (over 16 °C). Typically on 5 days the mercury remains below freezing for the entire day.

The thermometer dips to 0 °F (-18 °C) or below on an average of one to two nights during December.

Precipitation

0.5 in	total precipitation	12 mm
5 days	of rain or snowfall

Half the time, Denver receives 0.2 to 0.7 inches (5 to 17 mm) of precipitation in December. One in four years has drier weather, while another one in four is wetter.

Snow

6.6 in	total snowfall	17 cm
5 days	with new snow

December's snowfall varies a lot from year to year in Denver. Between 2.5 and 9 inches (6 to 27 cm) of fresh snow arrives in half the years. Less new snow lands in one out of four Decembers, while another twenty-five percent are snowier.

Denver typically has at least an inch (2.5 cm) of snow on the ground for 10 days this month. The snow normally accumulates to 5 inches (13 cm) or deeper on 1 day.

Sun

67 %	sunshine
11 days	clear skies

The sun's rays reach the ground in Denver during 67 percent of daylight hours on average in December, for a total of 196 hours in the month. Typically on 11 days this month the sky is mainly clear, with at most 30 percent cloud cover.

Sunlight in December at Denver averages 9 hours and 24 minutes a day. The shortest days of the year, on around December 21st and 22nd, last 9 hours and 21 minutes from sunrise to sunset.

Humidity

57 %	December average humidity

The relative humidity in Denver during December usually peaks at 65 percent in the morning then drops to 39 percent by early afternoon. December is Denver's most humid month.

Local Time	2 am	5 am	8 am	11 am	2 pm	5 pm	8 pm	11 pm
Humidity %	65	65	63	45	39	51	61	64

Wind

8.4 mph

December wind speed average

13.5 kph

December is a little less windy than most other months in Denver.

Storms

2 days	snowfall of 1 inch (2.5 cm) or more
0 days	with thunderstorms in December

About once a decade, a December snowstorm blankets Denver with ten inches (25 cm) or more of snow in one day.