December weather forecastBlack Eagle, MT
December
Weather in December
December, the first month of the winter in Black Eagle, is also a subzero cold month, with an average temperature varying between 18.3°F (-7.6°C) and 30°F (-1.1°C).Temperature
Black Eagle, Montana, experiences its lowest temperatures in December, with an average peak of 30°F (-1.1°C) and a low of 18.3°F (-7.6°C).Humidity
The average relative humidity in December is 76%.Rainfall
December is the month with the least rainfall. Rain falls for 2.7 days and accumulates 0.16" (4mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. In Black Eagle, in December, snow falls for 7.9 days, with typically accumulated 1.06" (27mm) of snow. Throughout the year, there are 45.4 snowfall days, and 11.61" (295mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 8h and 30min of daylight.On the first day of the month, sunrise is at 7:52 am and sunset at 4:35 pm. On the last day of December, sunrise is at 8:12 am and sunset at 4:44 pm MST.
Sunshine
January, February and December, with an average of 5.5h of sunshine, are months with the least sunshine.UV index
January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 2 during December translates into the following recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Black Eagle, MT
- Average high temperature in December: 30°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is December (30°F).
- Average low temperature in December: 18.3°F
The month with the highest average low temperature is August (57.7°F).
The coldest months (with the lowest average low temperature) are February and December (18.3°F).
Average pressure in December
Black Eagle, MT
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in December
Black Eagle, MT
- Average wind speed in December: 11mph
The windiest month (with the highest average wind speed) is November (11.4mph).
The calmest month (with the lowest average wind speed) is August (7.7mph).
Average humidity in December
Black Eagle, MT
- Average humidity in December: 76%
The month with the highest relative humidity is January (77%).
The month with the lowest relative humidity is August (40%).
Average rainfall in December
Black Eagle, MT
- Average rainfall in December: 0.16"
The wettest month (with the highest rainfall) is June (0.87").
The driest month (with the least rainfall) is December (0.16").
Average rainfall days in December
Black Eagle, MT
- Average rainfall days in December: 2.7 days
The month with the highest number of rainy days is April (9.9 days).
The month with the least rainy days is December (2.7 days).
Average snowfall in December
Black Eagle, MT
- Average snowfall in December: 1.06"
The month with the highest snowfall is February (2.09").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Black Eagle, MT
- Average snowfall days in December: 7.9 days
The month with the highest number of snowfall days is February (10 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Black Eagle, MT
- Average daylight in December: 8h and 30min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in December: 5h and 30min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 30min).
Average sunshine days in December
Black Eagle, MT
- Average sunshine days in December: 22.5 days
The month with the most sunshine days is July (26.1 days).
The months with the least sunshine days are February and April (16.2 days).
Average UV index in December
Black Eagle, 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, October, November and December (UV index 2).
Average cloud cover in December
Black Eagle, MT
- Average cloud cover in December: 42
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 13).
Average visibility in December
Black Eagle, 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).
