December weather forecastAspen, WY
December
Weather in December
The first month of the winter, December, is also a subzero cold month in Aspen, Wyoming, with an average temperature fluctuating between 26.4°F (-3.1°C) and 10.9°F (-11.7°C).Temperature
December, on average, is the coldest month, registering a high temperature of 26.4°F (-3.1°C) and a low of 10.9°F (-11.7°C).Humidity
The average relative humidity in December is 85%.Rainfall
In Aspen, during December, the rain falls for 7.1 days and regularly aggregates up to 1.14" (29mm) of precipitation. In Aspen, during the entire year, the rain falls for 94.2 days and collects up to 11.5" (292mm) of precipitation.Snowfall
January through June, September through December are months with snowfall. In Aspen, during December, snow falls for 15.5 days and regularly aggregates up to 8.74" (222mm) of snow. Throughout the year, there are 99.3 snowfall days, and 56.22" (1428mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 18min of daylight.On the first day of December, sunrise is at 7:29 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:48 am and sunset at 5:04 pm MST.
Sunshine
In December, the average sunshine is 6h.UV index
The months with the lowest UV index are November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index, 1 in December, converts into the following recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Aspen, WY
- Average high temperature in December: 26.4°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is December (26.4°F).
- Average low temperature in December: 10.9°F
The month with the highest average low temperature is July (51.6°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in December
Aspen, WY
- Average pressure in December: 30.24"Hg
The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Aspen, WY
- Average wind speed in December: 6.8mph
The windiest month (with the highest average wind speed) is April (8.2mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity in December
Aspen, WY
- Average humidity in December: 85%
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is August (39%).
Average rainfall in December
Aspen, WY
- Average rainfall in December: 1.14"
The wettest months (with the highest rainfall) are April and May (1.38").
The driest month (with the least rainfall) is August (0.51").
Average rainfall days in December
Aspen, WY
- Average rainfall days in December: 7.1 days
The month with the highest number of rainy days is May (11.9 days).
The month with the least rainy days is February (5.5 days).
Average snowfall in December
Aspen, WY
- Average snowfall in December: 8.74"
The month with the highest snowfall is March (10").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Aspen, WY
- Average snowfall days in December: 15.5 days
The month with the highest number of snowfall days is February (16.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Aspen, WY
- Average daylight in December: 9h and 18min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 6h and 0min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 48min).
Average sunshine days in December
Aspen, WY
- Average sunshine days in December: 15.1 days
The month with the most sunshine days is June (19.5 days).
The month with the least sunshine days is April (10.8 days).
Average UV index in December
Aspen, WY
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are November and December (UV index 1).
Average cloud cover in December
Aspen, WY
- Average cloud cover in December: 39
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility in December
Aspen, WY
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
