December weather forecast
Snowmass, CO

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Weather in December

December, the first month of the winter in Snowmass, is still a freezing cold month, with an average temperature fluctuating between 27.9°F (-2.3°C) and 7.7°F (-13.5°C).

Temperature

Snowmass's temperature records reveal December as the coldest month, marked by average highs of 27.9°F (-2.3°C) and lows of 7.7°F (-13.5°C).

Humidity

In Snowmass, the average relative humidity in December is 83%.

Rainfall

In Snowmass, during December, the rain falls for 8.2 days and regularly aggregates up to 1.54" (39mm) of precipitation. In Snowmass, during the entire year, the rain falls for 119.7 days and collects up to 16.69" (424mm) of precipitation.

Snowfall

Months with snowfall are January through June, September through December. In Snowmass, Colorado, during December, snow falls for 16.5 days and regularly aggregates up to 12.72" (323mm) of snow. Throughout the year, in Snowmass, there are 100.5 snowfall days, and 78.03" (1982mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Snowmass, with an average of 9h and 30min of daylight.
On the first day of December, sunrise is at 7:09 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 4:54 pm MST.

Sunshine

In Snowmass, Colorado, the average sunshine in December is 6.2h.

UV index

With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: During December, 1 as the daily maximum UV index converts into the following advice:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month in Snowmass?

With average temperatures fluctuating between a high of 27.9°F (-2.3°C) and a low of 7.7°F (-13.5°C), December stands out as the coldest month.

How cold is December in Snowmass?

An average high-temperature, in December, in Snowmass, is 27.9°F (-2.3°C) and the average low-temperature is 7.7°F (-13.5°C).

What is the average humidity in December in Snowmass?

The average relative humidity in December in Snowmass, Colorado, is 83%.

How many days does it rain in December in Snowmass?

In Snowmass, during December, the rain falls for 8.2 days and regularly aggregates up to 1.54" (39mm) of precipitation.

How many days does it snow in December in Snowmass?

In Snowmass, in December, snow falls for 16.5 days, with typically accumulated 12.72" (323mm) of snow.

What is the month with the shortest days in Snowmass?

December has the shortest days of the year, with an average of 9h and 30min of daylight.

What is the average length of the day in December in Snowmass?

In Snowmass, Colorado, the average day length in December is 9h and 27min.

What time are sunrise and sunset in December in Snowmass?

In December, on the first day of the month, sunrise is at 7:09 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 4:54 pm MST.

How long on average sun shines in December in Snowmass?

The average sunshine duration in December in Snowmass, Colorado, is 6.2h.

When is the lowest UV index in Snowmass?

With an average maximum UV index of 1, December is the month with the lowest UV index in Snowmass.

How high is the UV index in December in Snowmass?

In December, the average daily maximum UV index in Snowmass is 1. A UV Index reading of 2, and below, represents a minimal hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Snowmass, CO

Average temperature in December - Snowmass, CO
  • Average high temperature in December: 27.9°F

The warmest month (with the highest average high temperature) is July (75.7°F).
The month with the lowest average high temperature is December (27.9°F).

  • Average low temperature in December: 7.7°F

The month with the highest average low temperature is July (43.9°F).
The coldest month (with the lowest average low temperature) is January (5.4°F).

Average pressure in December
Snowmass, CO

Average pressure in December - Snowmass, CO
  • Average pressure in December: 30.18"Hg

The month with the highest atmospheric pressure is January (30.24"Hg).
The month with the lowest atmospheric pressure is May (29.94"Hg).

Average wind speed in December
Snowmass, CO

Average wind speed in December - Snowmass, CO
  • Average wind speed in December: 4.5mph

The windiest month (with the highest average wind speed) is June (5.9mph).
The calmest month (with the lowest average wind speed) is January (4.3mph).

Average humidity in December
Snowmass, CO

Average humidity in December - Snowmass, CO
  • Average humidity in December: 83%

The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is June (48%).

Average rainfall in December
Snowmass, CO

Average rainfall in December - Snowmass, CO
  • Average rainfall in December: 1.54"

The wettest month (with the highest rainfall) is April (2.05").
The driest month (with the least rainfall) is September (0.63").

Average rainfall days in December
Snowmass, CO

Average rainfall days in December - Snowmass, CO
  • Average rainfall days in December: 8.2 days

The month with the highest number of rainy days is July (15.5 days).
The month with the least rainy days is November (5.1 days).

Average snowfall in December
Snowmass, CO

Average snowfall in December - Snowmass, CO
  • Average snowfall in December: 12.72"

The month with the highest snowfall is February (13.94").
The months with the least snowfall are July and August (0").

Average snowfall days in December
Snowmass, CO

Average snowfall days in December - Snowmass, CO
  • Average snowfall days in December: 16.5 days

The month with the highest number of snowfall days is February (18.7 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in December /
Average sunshine in December
Snowmass, CO

Average daylight in December / Average sunshine in December - Snowmass, 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: 6h and 1min

The month with the most sunshine is June (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 42min).

Average sunshine days in December
Snowmass, CO

Average sunshine days in December - Snowmass, CO
  • Average sunshine days in December: 13 days

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is April (7.3 days).

Average UV index in December
Snowmass, CO

Average UV index in December - Snowmass, CO
  • Average UV index in December: 1

The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in December
Snowmass, CO

Average cloud cover in December - Snowmass, CO
  • Average cloud cover in December: 36

The month with the most cloud cover is February (Cloud cover 43).
The months with the least cloud cover are June and September (Cloud cover 14).

Average visibility in December
Snowmass, CO

Average visibility in December - Snowmass, CO
  • Average visibility in December: 4mi

The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).

Snowmass, Colorado, USA

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