December weather forecastThree Forks, MT
December
Weather in December
December, the first month of the winter in Three Forks, is also a subzero cold month, with an average temperature varying between 12.7°F (-10.7°C) and 28°F (-2.2°C).Temperature
Three Forks reaches its lowest average temperatures in December, measuring 28°F (-2.2°C) at the peak and 12.7°F (-10.7°C) at the lowest.Humidity
The average relative humidity in December is 84%.Rainfall
In Three Forks, in December, during 9.5 rainfall days, 0.67" (17mm) of precipitation is typically accumulated. In Three Forks, during the entire year, the rain falls for 134.2 days and collects up to 11.34" (288mm) of precipitation.Snowfall
January through June, September through December are months with snowfall. In Three Forks, during December, snow falls for 14.8 days and regularly aggregates up to 4.72" (120mm) of snow. Throughout the year, there are 79.6 snowfall days, and 30.08" (764mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 8h and 42min of daylight.On the first day of the month, sunrise is at 7:48 am and sunset at 4:42 pm. On the last day of December, sunrise is at 8:07 am and sunset at 4:51 pm MST.
Sunshine
In Three Forks, the average sunshine in December is 6.1h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In December, a regular UV index of 1 translates into these guidelines:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Three Forks, MT
- Average high temperature in December: 28°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is December (28°F).
- Average low temperature in December: 12.7°F
The month with the highest average low temperature is August (50.5°F).
The coldest month (with the lowest average low temperature) is December (12.7°F).
Average pressure in December
Three Forks, MT
- Average pressure in December: 30.19"Hg
The months with the highest atmospheric pressure are January and December (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Three Forks, MT
- Average wind speed in December: 4.8mph
The windiest month (with the highest average wind speed) is April (5.5mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in December
Three Forks, MT
- Average humidity in December: 84%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (44%).
Average rainfall in December
Three Forks, MT
- Average rainfall in December: 0.67"
The wettest month (with the highest rainfall) is June (1.57").
The driest month (with the least rainfall) is August (0.51").
Average rainfall days in December
Three Forks, MT
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is April (16.5 days).
The month with the least rainy days is August (7.6 days).
Average snowfall in December
Three Forks, MT
- Average snowfall in December: 4.72"
The month with the highest snowfall is February (6.02").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Three Forks, MT
- Average snowfall days in December: 14.8 days
The month with the highest number of snowfall days is February (16.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Three Forks, MT
- Average daylight in December: 8h and 42min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in December: 6h and 6min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 54min).
Average sunshine days in December
Three Forks, MT
- Average sunshine days in December: 14.4 days
The month with the most sunshine days is September (18.7 days).
The month with the least sunshine days is April (9.3 days).
Average UV index in December
Three Forks, MT
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Three Forks, MT
- Average cloud cover in December: 38
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in December
Three Forks, MT
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
