December weather forecastValier, MT
December
Weather in December
The first month of the winter, December, is also a subzero cold month in Valier, Montana, with an average temperature fluctuating between 28.6°F (-1.9°C) and 16°F (-8.9°C).Temperature
With average temperatures fluctuating between a high of 28.6°F (-1.9°C) and a low of 16°F (-8.9°C), December stands out as the coldest month.Humidity
The average relative humidity in December is 76%.Rainfall
In Valier, Montana, during December, the rain falls for 4.5 days and regularly aggregates up to 0.55" (14mm) of precipitation. Throughout the year, there are 104.3 rainfall days, and 11.93" (303mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. In Valier, in December, snow falls for 12.6 days, with typically accumulated 3.27" (83mm) of snow. In Valier, during the entire year, snow falls for 68.2 days and aggregates up to 25.63" (651mm) of snow.Daylight
With an average of 8h and 24min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:59 am and sunset at 4:36 pm. On the last day of December, sunrise is at 8:19 am and sunset at 4:44 pm MST.
Sunshine
With an average of 5.5h of sunshine, December has the least sunshine of the year.UV index
The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: A maximum high UV index of 2 in December translates into the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Valier, MT
- Average high temperature in December: 28.6°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is December (28.6°F).
- Average low temperature in December: 16°F
The month with the highest average low temperature is August (57.7°F).
The coldest month (with the lowest average low temperature) is December (16°F).
Average pressure in December
Valier, 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 (29.87"Hg).
Average wind speed in December
Valier, MT
- Average wind speed in December: 10.3mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).
Average humidity in December
Valier, 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
Valier, MT
- Average rainfall in December: 0.55"
The wettest month (with the highest rainfall) is June (2.36").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in December
Valier, MT
- Average rainfall days in December: 4.5 days
The month with the highest number of rainy days is May (16.1 days).
The month with the least rainy days is January (4.2 days).
Average snowfall in December
Valier, MT
- Average snowfall in December: 3.27"
The month with the highest snowfall is February (4.88").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Valier, MT
- Average snowfall days in December: 12.6 days
The month with the highest number of snowfall days is December (12.6 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Valier, MT
- Average daylight in December: 8h and 24min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in December: 5h and 30min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in December
Valier, MT
- Average sunshine days in December: 17 days
The month with the most sunshine days is September (19.5 days).
The month with the least sunshine days is April (12.2 days).
Average UV index in December
Valier, 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
Valier, MT
- Average cloud cover in December: 42
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 14).
Average visibility in December
Valier, 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).
