December weather forecast
Crow Agency, MT

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Weather in December

The first month of the winter, December, is also a subzero cold month in Crow Agency, Montana, with temperature in the range of an average high of 31.3°F (-0.4°C) and an average low of 18.1°F (-7.7°C).

Temperature

December, known for its average high temperature of 31.3°F (-0.4°C) and an average low temperature of 18.1°F (-7.7°C), is the coldest month.

Humidity

The average relative humidity in December is 74%.

Rainfall

In Crow Agency, in December, during 5.9 rainfall days, 0.67" (17mm) of precipitation is typically accumulated. Throughout the year, there are 103 rainfall days, and 11.97" (304mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall. In December, in Crow Agency, it is snowing for 10.8 days. Throughout December, 3.94" (100mm) of snow is accumulated. Throughout the year, in Crow Agency, there are 56.7 snowfall days, and 25.16" (639mm) of snow is accumulated.

Daylight

The month with the shortest days in Crow Agency, Montana, is December, with an average of 8h and 48min of daylight.
On the first day of December, sunrise is at 7:30 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:50 am and sunset at 4:36 pm MST.

Sunshine

In Crow Agency, the average sunshine in December is 5.8h.

UV index

January through March, November and 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 health risk from unsafe exposure to UV radiation for the ordinary person.
Note: In December, the maximum UV index of 2 suggests these recommendations:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest in Crow Agency?

December is the month when Crow Agency experiences its coldest temperatures, averaging a high of 31.3°F (-0.4°C) and a low of 18.1°F (-7.7°C).

How cold is December in Crow Agency?

December temperatures in Crow Agency, Montana, vary between a high-temperature of 31.3°F (-0.4°C) and a low-temperature of 18.1°F (-7.7°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, in July is appraised at 87.8°F (31°C).

What is the average humidity in December in Crow Agency?

In December, the average relative humidity in Crow Agency, Montana, is 74%.

How much does it rain in Crow Agency in December?

In Crow Agency, Montana, in December, it is raining for 5.9 days, with typically 0.67" (17mm) of accumulated precipitation.

How many days does it snow in December in Crow Agency?

In Crow Agency, during December, snow falls for 10.8 days and regularly aggregates up to 3.94" (100mm) of snow.

What is the month with the shortest days in Crow Agency?

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

How many hours of daylight does Crow Agency have in December?

In December, the average day length in Crow Agency, Montana, is 8h and 46min.

When are sunrise and sunset in December in Crow Agency?

On the first day of December in Crow Agency, Montana, sunrise is at 7:30 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:50 am and sunset at 4:36 pm MST.

How many hours of sunshine does Crow Agency have in December?

The average sunshine duration in December in Crow Agency is 5.8h.

What is the month with the lowest UV index in Crow Agency?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Crow Agency.

How high is the UV index in December in Crow Agency?

In December, the average daily maximum UV index in Crow Agency, Montana, is 2. A UV Index value of 2, and less, symbolizes a low health threat from unprotected exposure to 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
Crow Agency, MT

Average temperature in December - Crow Agency, MT
  • Average high temperature in December: 31.3°F

The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is December (31.3°F).

  • Average low temperature in December: 18.1°F

The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).

Average pressure in December
Crow Agency, MT

Average pressure in December - Crow Agency, MT
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed in December
Crow Agency, MT

Average wind speed in December - Crow Agency, MT
  • Average wind speed in December: 8.2mph

The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).

Average humidity in December
Crow Agency, MT

Average humidity in December - Crow Agency, MT
  • Average humidity in December: 74%

The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is August (38%).

Average rainfall in December
Crow Agency, MT

Average rainfall in December - Crow Agency, MT
  • Average rainfall in December: 0.67"

The wettest month (with the highest rainfall) is May (1.81").
The driest month (with the least rainfall) is August (0.63").

Average rainfall days in December
Crow Agency, MT

Average rainfall days in December - Crow Agency, MT
  • Average rainfall days in December: 5.9 days

The month with the highest number of rainy days is May (13.6 days).
The month with the least rainy days is December (5.9 days).

Average snowfall in December
Crow Agency, MT

Average snowfall in December - Crow Agency, MT
  • Average snowfall in December: 3.94"

The month with the highest snowfall is February (5.43").
The months with the least snowfall are June, July and August (0").

Average snowfall days in December
Crow Agency, MT

Average snowfall days in December - Crow Agency, MT
  • Average snowfall days in December: 10.8 days

The month with the highest number of snowfall days is February (12.5 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in December /
Average sunshine in December
Crow Agency, MT

Average daylight in December / Average sunshine in December - Crow Agency, MT
  • Average daylight in December: 8h and 5min

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: 5h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 36min).

Average sunshine days in December
Crow Agency, MT

Average sunshine days in December - Crow Agency, MT
  • Average sunshine days in December: 17.3 days

The month with the most sunshine days is September (21.5 days).
The month with the least sunshine days is February (13.3 days).

Average UV index in December
Crow Agency, MT

Average UV index in December - Crow Agency, MT
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in December
Crow Agency, MT

Average cloud cover in December - Crow Agency, MT
  • Average cloud cover in December: 40

The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 13).

Average visibility in December
Crow Agency, MT

Average visibility in December - Crow Agency, 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).

Crow Agency, Montana, USA

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