December weather forecastCooke City, MT

December

Weather in December

December secures the onset of intense winter conditions in Cooke City, Montana. With temperatures falling drastically from November, it paves the way for January's severe cold. The snowfall remains relatively consistent at 4.33" (110mm), maintaining the winter vibe. Low temperatures and shortened daylight hours cast a typical winter appearance on the city. The landscapes transform into a winter wonderland, painting a picture-perfect frame for holiday celebrations.

Temperature

December, with its average high-temperature of 27.5°F (-2.5°C) and an average low-temperature of 14.9°F (-9.5°C), holds the record as the coldest month in Cooke City.

Humidity

The average relative humidity in December in Cooke City is 76%.

Rainfall

The month with the least rainfall in Cooke City is December, when the rain falls for 8.5 days and typically collects 0.55" (14mm) of precipitation.

Snowfall

Months with snowfall in Cooke City are January through June, September through December. In December, in Cooke City, it is snowing for 12.2 days. Throughout December, 4.33" (110mm) of snow is accumulated. In Cooke City, during the entire year, snow falls for 92.3 days and aggregates up to 55.83" (1418mm) of snow.

Daylight

The month with the shortest days is December, with an average of 8h and 48min of daylight.
On the first day of December, sunrise is at 7:38 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:57 am and sunset at 4:48 pm MST.

Sunshine

In December, the average sunshine is 6.6h.

UV index

January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, the UV index of 2 transforms into the following advice:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Cooke City's temperature records reveal December as the coldest month, marked by average highs of 27.5°F (-2.5°C) and lows of 14.9°F (-9.5°C).

In Cooke City, 27.5°F (-2.5°C) is the average high-temperature and 14.9°F (-9.5°C) is the average low-temperature during December.

The average relative humidity in December is 76%.

December is the month with the least rainfall. Rain falls for 8.5 days and accumulates 0.55" (14mm) of precipitation.

In Cooke City, in December, during 8.5 rainfall days, 0.55" (14mm) of precipitation is typically accumulated.

In Cooke City, in December, during 12.2 snowfall days, 4.33" (110mm) of snow is typically accumulated.

December has the shortest days of the year, with an average of 8h and 48min of daylight.

In December, the average day length in Cooke City, Montana, is 8h and 50min.

On the first day of December in Cooke City, sunrise is at 7:38 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:57 am and sunset at 4:48 pm MST.

In December, the average sunshine duration in Cooke City is 6.6h.

January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Cooke City, Montana.

The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Cooke City, MT

  • Average high temperature in December: 27.5°F

The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is December (27.5°F).

  • Average low temperature in December: 14.9°F

The month with the highest average low temperature is July (56.1°F).
The coldest months (with the lowest average low temperature) are February and December (14.9°F).

Average pressure in December
Cooke City, MT

  • Average pressure in December: 30.15"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in December
Cooke City, MT

  • Average wind speed in December: 7.8mph

The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

Average humidity in December
Cooke City, MT

  • Average humidity in December: 76%

The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is August (43%).

Average rainfall in December
Cooke City, MT

  • Average rainfall in December: 0.55"

The wettest month (with the highest rainfall) is May (2.52").
The driest month (with the least rainfall) is December (0.55").

Average rainfall days in December
Cooke City, MT

  • Average rainfall days in December: 8.5 days

The month with the highest number of rainy days is May (20 days).
The month with the least rainy days is November (5.7 days).

Average snowfall in December
Cooke City, MT

  • Average snowfall in December: 4.33"

The month with the highest snowfall is April (9.37").
The months with the least snowfall are July and August (0").

Average snowfall days in December
Cooke City, MT

  • Average snowfall days in December: 12.2 days

The month with the highest number of snowfall days is February (14.8 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in December /
Average sunshine in December
Cooke City, MT

  • Average daylight in December: 8h and 48min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in December: 6h and 36min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 30min).

Average sunshine days in December
Cooke City, MT

  • Average sunshine days in December: 17.4 days

The month with the most sunshine days is December (17.4 days).
The month with the least sunshine days is May (5.1 days).

Average UV index in December
Cooke City, MT

  • Average UV index in December: 2

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

Average cloud cover in December
Cooke City, MT

  • Average cloud cover in December: 31

The month with the most cloud cover is February (Cloud cover 36).
The months with the least cloud cover are July and August (Cloud cover 16).

Average visibility in December
Cooke City, MT

  • Average visibility in December: 6mi

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