December weather forecastFort Benton, MT
December
Weather in December
December, the first month of the winter in Fort Benton, is still a freezing cold month, with an average temperature varying between 18.5°F (-7.5°C) and 29.8°F (-1.2°C).Temperature
December, known for its average high temperature of 29.8°F (-1.2°C) and an average low temperature of 18.5°F (-7.5°C), is the coldest month.Humidity
In December, the average relative humidity is 76%.Rainfall
December is the month with the least rainfall in Fort Benton. Rain falls for 5.8 days and accumulates 0.67" (17mm) of precipitation.Snowfall
January through May, September through December are months with snowfall in Fort Benton. In Fort Benton, in December, during 10.7 snowfall days, 4.61" (117mm) of snow is typically accumulated. Throughout the year, there are 58.3 snowfall days, and 29.37" (746mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 8h and 30min of daylight.On the first day of December, sunrise is at 7:51 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 8:11 am and sunset at 4:40 pm MST.
Sunshine
January, February and December, with an average of 5.5h of sunshine, are months with the least sunshine.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: In December, a daily UV index of 2 turns into the following recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Fort Benton, MT
- Average high temperature in December: 29.8°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is December (29.8°F).
- Average low temperature in December: 18.5°F
The month with the highest average low temperature is August (60.4°F).
The coldest month (with the lowest average low temperature) is February (18.1°F).
Average pressure in December
Fort Benton, 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
Fort Benton, MT
- Average wind speed in December: 10.4mph
The windiest months (with the highest average wind speed) are January and November (10.7mph).
The calmest month (with the lowest average wind speed) is August (8.1mph).
Average humidity in December
Fort Benton, MT
- Average humidity in December: 76%
The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is August (39%).
Average rainfall in December
Fort Benton, MT
- Average rainfall in December: 0.67"
The wettest month (with the highest rainfall) is June (2.05").
The driest month (with the least rainfall) is December (0.67").
Average rainfall days in December
Fort Benton, MT
- Average rainfall days in December: 5.8 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is January (5.3 days).
Average snowfall in December
Fort Benton, MT
- Average snowfall in December: 4.61"
The month with the highest snowfall is February (5.51").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Fort Benton, MT
- Average snowfall days in December: 10.7 days
The month with the highest number of snowfall days is February (12.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Fort Benton, MT
- Average daylight in December: 8h and 30min
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 30min).
- Average sunshine in December: 5h and 30min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 30min).
Average sunshine days in December
Fort Benton, MT
- Average sunshine days in December: 17.8 days
The month with the most sunshine days is September (19.3 days).
The month with the least sunshine days is April (11.2 days).
Average UV index in December
Fort Benton, MT
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Fort Benton, 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
Fort Benton, 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).
