Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
January and December in Aspen are characterised by lowest temperatures, with an average high of 24.4°F (-4.2°C).Humidity
In December, the average relative humidity is 86%.Rainfall
In Aspen, during December, the rain falls for 5.2 days and regularly aggregates up to 0.28" (7mm) of precipitation. In Aspen, during the entire year, the rain falls for 72.4 days and collects up to 4.33" (110mm) of precipitation.Snowfall
Months with snowfall in Aspen, Colorado, are January through June, September through December. In Aspen, during December, snow falls for 11.8 days and regularly aggregates up to 2.32" (59mm) of snow. In Aspen, during the entire year, snow falls for 83.2 days and aggregates up to 19.45" (494mm) of snow.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:08 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:54 pm MST.
Sunshine
In Aspen, the average sunshine in December is 5.5h.UV index
The months with the lowest UV index in Aspen are February and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for average individuals.Note: The average daily UV index of 1 in December transforms into the following instructions:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year in Aspen?
How cold is December in Aspen?
What is the average humidity in December in Aspen?
How much does it rain in Aspen in December?
How many days does it snow in December in Aspen?
What is the month with the shortest days in Aspen?
How many hours of daylight does Aspen have in December?
When is the sunrise / sunset in December in Aspen?
How many hours of sunshine does Aspen have in December?
What are the months with the lowest UV index in Aspen?
What is the UV index intensity in December in Aspen?
Average temperature in December
Aspen, CO
- Average high temperature in December: 24.4°F
The warmest month (with the highest average high temperature) is July (69.4°F).
The months with the lowest average high temperature are January and December (24.4°F).
- Average low temperature in December: 3.6°F
The month with the highest average low temperature is July (40.5°F).
The coldest month (with the lowest average low temperature) is January (2.1°F).
Average pressure in December
Aspen, CO
- Average pressure in December: 30.17"Hg
The month with the highest atmospheric pressure is January (30.23"Hg).
The months with the lowest atmospheric pressure are April and May (29.95"Hg).
Average wind speed in December
Aspen, CO
- Average wind speed in December: 4.7mph
The windiest month (with the highest average wind speed) is June (6.2mph).
The calmest months (with the lowest average wind speed) are January and August (4.5mph).
Average humidity in December
Aspen, CO
- Average humidity in December: 86%
The month with the highest relative humidity is February (90%).
The month with the lowest relative humidity is June (51%).
Average rainfall in December
Aspen, CO
- Average rainfall in December: 0.28"
The wettest months (with the highest rainfall) are March and July (0.51").
The driest month (with the least rainfall) is September (0.2").
Average rainfall days in December
Aspen, CO
- Average rainfall days in December: 5.2 days
The month with the highest number of rainy days is July (12.1 days).
The month with the least rainy days is January (2.8 days).
Average snowfall in December
Aspen, CO
- Average snowfall in December: 2.32"
The month with the highest snowfall is March (3.98").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Aspen, CO
- Average snowfall days in December: 11.8 days
The month with the highest number of snowfall days is February (12.8 days).
The months with the least snowfall days are July and August (0.1 days).
Average daylight in December /
Average sunshine in December
Aspen, CO
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 5h and 3min
The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).
Average sunshine days in December
Aspen, CO
- Average sunshine days in December: 20.9 days
The month with the most sunshine days is November (23.6 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in December
Aspen, CO
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 4).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in December
Aspen, CO
- Average cloud cover in December: 46
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 15).
Average visibility in December
Aspen, CO
- Average visibility in December: 4mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
Aspen, Colorado, USA
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