December weather forecastWilsall, MT
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Wilsall, Montana, with an average temperature varying between 11.8°F (-11.2°C) and 25.2°F (-3.8°C).Temperature
In Wilsall, December is the month with the lowest recorded average temperatures, measuring a high of 25.2°F (-3.8°C) and a low of 11.8°F (-11.2°C).Humidity
In Wilsall, Montana, the average relative humidity in December is 85%.Rainfall
January and December are months with the least rain in Wilsall, Montana, when the rain falls for 6.8 days and typically aggregates up to 1.02" (26mm) of rain.Snowfall
January through June, September through December are months with snowfall in Wilsall. In Wilsall, in December, snow falls for 15.7 days, with typically accumulated 7.87" (200mm) of snow. Throughout the year, there are 100.5 snowfall days, and 58.7" (1491mm) of snow is accumulated.Daylight
With an average of 8h and 42min of daylight, December has the shortest days of the year in Wilsall, Montana.On the first day of the month, sunrise is at 7:44 am and sunset at 4:39 pm. On the last day of December, sunrise is at 8:04 am and sunset at 4:47 pm MST.
Sunshine
In Wilsall, the average sunshine in December is 5.7h.UV index
The average daily maximum UV index in December in Wilsall is 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index of 2 during December translates into these guidelines:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Wilsall, MT
- Average high temperature in December: 25.2°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is December (25.2°F).
- Average low temperature in December: 11.8°F
The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is February (11.7°F).
Average pressure in December
Wilsall, MT
- Average pressure in December: 30.17"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Wilsall, MT
- Average wind speed in December: 8.9mph
The windiest month (with the highest average wind speed) is January (9.2mph).
The calmest month (with the lowest average wind speed) is July (5.2mph).
Average humidity in December
Wilsall, MT
- Average humidity in December: 85%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is August (50%).
Average rainfall in December
Wilsall, MT
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is May (2.56").
The driest months (with the least rainfall) are January and December (1.02").
Average rainfall days in December
Wilsall, MT
- Average rainfall days in December: 6.8 days
The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is December (6.8 days).
Average snowfall in December
Wilsall, MT
- Average snowfall in December: 7.87"
The month with the highest snowfall is March (9.72").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Wilsall, MT
- Average snowfall days in December: 15.7 days
The month with the highest number of snowfall days is February (17.9 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Wilsall, 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: 5h and 42min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).
Average sunshine days in December
Wilsall, MT
- Average sunshine days in December: 13.6 days
The month with the most sunshine days is September (16.8 days).
The month with the least sunshine days is April (7.1 days).
Average UV index in December
Wilsall, MT
- Average UV index in December: 2
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in December
Wilsall, MT
- Average cloud cover in December: 45
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in December
Wilsall, MT
- Average visibility in December: 5mi
The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is February (4mi).
