December weather forecast and climate
Aspen, CO

The scenic view of the icy Maroon bells in the Elk Mountain viewed from the White River below
The scenic view of the icy Maroon bells in the Elk Mountain viewed from the White River below

What is the coldest month in Aspen?

December is the coldest month in Aspen, Colorado, with an average high-temperature of 34.7°F (1.5°C) and an average low-temperature of 10.2°F (-12.1°C).

What is the temperature in December in Aspen?

The average high-temperature, in December, in Aspen, is 34.7°F (1.5°C), while the average low-temperature is 10.2°F (-12.1°C).
Average temperature in December - Aspen, CO
  • Average high temperature in December: 34.7°F

The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is December (34.7°F).

  • Average low temperature in December: 10.2°F

The month with the highest average low temperature is July (48.1°F).
The coldest month (with the lowest average low temperature) is January (9.4°F).

Average rainfall in December - Aspen, CO
  • Average rainfall in December: 2.1"

The wettest month (with the highest rainfall) is March (2.7").
The driest month (with the lowest rainfall) is June (1.3").

Average rainfall days in December - Aspen, CO
  • Average rainfall days in December: 12 days

Months with the highest number of rainy days are January, February, March, April, August and December (12 days).
The month with the lowest number of rainy days is June (7 days).

Average snowfall in December - Aspen, CO
  • Average snowfall in December: 23.1"

The month with the highest snowfall is January (25.2").
Months with the lowest snowfall are July and August (0").

Average daylight in December / Average sunshine in December - Aspen, CO
  • Average daylight in December: 9.5h

The month with the longest days is June (Average daylight: 14.9h).
The month with shortest days is December (Average daylight: 9.5h).

  • Average sunshine in December: 6h

The month with most sunshine is June (Average sunshine: 11h).
Months with least sunshine are November and December (Average sunshine: 6).

Average UV index in December - Aspen, CO
  • Average UV index in December: 2

Months with the highest UV index are June and July (UV index 11).
Months with the lowest UV index are January and December (UV index 2).

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