December weather forecast
Alma, CO

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The beauty of the Bristlecone Pines up the hill looking over to Alma and Fairplay, Colorado
The beauty of the Bristlecone Pines up the hill looking over to Alma and Fairplay, Colorado

Weather in December

The first month of the winter, December, is still a freezing cold month in Alma, Colorado, with temperature in the range of an average low of 1.8°F (-16.8°C) and an average high of 22.5°F (-5.3°C).

Temperature

The coldest temperatures occur during December, when averages reach a peak of 22.5°F (-5.3°C) and a low of 1.8°F (-16.8°C).

Humidity

In December, the average relative humidity is 85%.

Rainfall

In Alma, in December, during 5.1 rainfall days, 1.34" (34mm) of precipitation is typically accumulated. Throughout the year, there are 113.5 rainfall days, and 22.13" (562mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through December. In Alma, during December, snow falls for 17.5 days and regularly aggregates up to 10.98" (279mm) of snow. In Alma, Colorado, during the entire year, snow falls for 139 days and aggregates up to 101.69" (2583mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 30min of daylight.
On the first day of the month, sunrise is at 7:05 am and sunset at 4:41 pm. On the last day of December, sunrise is at 7:23 am and sunset at 4:51 pm MST.

Sunshine

In December, the average sunshine is 5.9h.

UV index

In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the average person.
Note: A typical high UV index of 2 in December suggests the following recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Updated: Jun 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest?

Alma notes the coldest temperatures in December, with a average high of 22.5°F (-5.3°C) and a low of 1.8°F (-16.8°C).

How cold is it in December?

In December, in Alma, the average high-temperature is 22.5°F (-5.3°C), and the average low-temperature is 1.8°F (-16.8°C).

What is the average humidity in December?

In December, the average relative humidity is 85%.

How much does it rain in December?

In December, the rain falls for 5.1 days. Throughout December, 1.34" (34mm) of precipitation is accumulated.

How many days does it snow in December?

In Alma, Colorado, in December, during 17.5 snowfall days, 10.98" (279mm) of snow is typically accumulated.

What is the month with the shortest days?

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

How many hours of daylight does Alma have in December?

In Alma, the average day length in December is 9h and 28min.

When are sunrise and sunset in December in Alma?

On the first day of December, sunrise is at 7:05 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:51 pm MST.

How many hours of sunshine does Alma have in December?

In Alma, the average sunshine duration in December is 5.9h.

What is the UV index reading in December?

In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation.
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
Alma, CO

Average temperature in December - Alma, CO
  • Average high temperature in December: 22.5°F

The warmest month (with the highest average high temperature) is July (66.2°F).
The month with the lowest average high temperature is December (22.5°F).

  • Average low temperature in December: 1.8°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 (1.4°F).

Average pressure in December
Alma, CO

Average pressure in December - Alma, CO
  • Average pressure in December: 30.16"Hg

The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is April (29.94"Hg).

Average wind speed in December
Alma, CO

Average wind speed in December - Alma, CO
  • Average wind speed in December: 5.7mph

The windiest month (with the highest average wind speed) is June (6.4mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).

Average humidity in December
Alma, CO

Average humidity in December - Alma, CO
  • Average humidity in December: 85%

The month with the highest relative humidity is February (89%).
The month with the lowest relative humidity is June (52%).

Average rainfall in December
Alma, CO

Average rainfall in December - Alma, CO
  • Average rainfall in December: 1.34"

The wettest month (with the highest rainfall) is July (3.39").
The driest month (with the least rainfall) is November (1.06").

Average rainfall days in December
Alma, CO

Average rainfall days in December - Alma, CO
  • Average rainfall days in December: 5.1 days

The month with the highest number of rainy days is July (23.1 days).
The month with the least rainy days is November (2.8 days).

Average snowfall in December
Alma, CO

Average snowfall in December - Alma, CO
  • Average snowfall in December: 10.98"

The month with the highest snowfall is May (16.26").
The month with the least snowfall is July (0.16").

Average snowfall days in December
Alma, CO

Average snowfall days in December - Alma, CO
  • Average snowfall days in December: 17.5 days

The month with the highest number of snowfall days is April (18.8 days).
The month with the least snowfall days is July (0.5 days).

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

Average daylight in December / Average sunshine in December - Alma, 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 5min

The month with the most sunshine is June (Average sunshine: 11h and 36min).
The month with the least sunshine is February (Average sunshine: 5h and 36min).

Average sunshine days in December
Alma, CO

Average sunshine days in December - Alma, CO
  • Average sunshine days in December: 13.7 days

The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is July (4.8 days).

Average UV index in December
Alma, CO

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

The months with the highest UV index are July and August (UV index 4).
The month with the lowest UV index is February (UV index 1).

Average cloud cover in December
Alma, CO

Average cloud cover in December - Alma, CO
  • Average cloud cover in December: 43

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 17).

Average visibility in December
Alma, CO

Average visibility in December - Alma, 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, April and December (4mi).

Alma, Colorado, USA

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