December weather forecastSula, MT
December
Weather in December
December, the first month of the winter in Sula, is also a subzero cold month, with an average temperature varying between 9.5°F (-12.5°C) and 24.1°F (-4.4°C).Temperature
With an average high-temperature of 24.1°F (-4.4°C) and an average low-temperature of 9.5°F (-12.5°C), December is the coldest month.Humidity
The average relative humidity in December in Sula, Montana, is 90%.Rainfall
In Sula, in December, during 5.2 rainfall days, 1.38" (35mm) of precipitation is typically accumulated. Throughout the year, in Sula, Montana, there are 93.6 rainfall days, and 15.43" (392mm) of precipitation is accumulated.Snowfall
January through December are months with snowfall in Sula. In December, it is snowing for 16.5 days. Throughout December, 11.34" (288mm) of snow is accumulated. Throughout the year, there are 129.3 snowfall days, and 94.92" (2411mm) of snow is accumulated.Daylight
December has the shortest days of the year in Sula, with an average of 8h and 42min of daylight.On the first day of the month, sunrise is at 7:57 am and sunset at 4:52 pm. On the last day of December, in Sula, sunrise is at 8:17 am and sunset at 5:01 pm MST.
Sunshine
The months with the least sunshine are January and December, with an average of 5.1h of sunshine.UV index
The months with the lowest UV index in Sula, Montana, are January, February and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.Note: The maximum UV index, 1 during December, leads to the following recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Sula, MT
- Average high temperature in December: 24.1°F
The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is December (24.1°F).
- Average low temperature in December: 9.5°F
The month with the highest average low temperature is August (45.3°F).
The coldest month (with the lowest average low temperature) is December (9.5°F).
Average pressure in December
Sula, MT
- Average pressure in December: 30.22"Hg
The month with the highest atmospheric pressure is January (30.23"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Sula, MT
- Average wind speed in December: 5mph
The windiest month (with the highest average wind speed) is November (5.2mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in December
Sula, MT
- Average humidity in December: 90%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is August (48%).
Average rainfall in December
Sula, MT
- Average rainfall in December: 1.38"
The wettest month (with the highest rainfall) is April (1.81").
The driest month (with the least rainfall) is August (0.39").
Average rainfall days in December
Sula, MT
- Average rainfall days in December: 5.2 days
The month with the highest number of rainy days is June (11.7 days).
The months with the least rainy days are January, August and December (5.2 days).
Average snowfall in December
Sula, MT
- Average snowfall in December: 11.34"
The month with the highest snowfall is February (14.8").
The month with the least snowfall is July (0.12").
Average snowfall days in December
Sula, MT
- Average snowfall days in December: 16.5 days
The month with the highest number of snowfall days is March (20.3 days).
The month with the least snowfall days is July (0.2 days).
Average daylight in December /
Average sunshine in December
Sula, 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 6min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The months with the least sunshine are January and December (Average sunshine: 5h and 6min).
Average sunshine days in December
Sula, MT
- Average sunshine days in December: 14.4 days
The month with the most sunshine days is August (22.3 days).
The month with the least sunshine days is March (8.8 days).
Average UV index in December
Sula, MT
- Average UV index in December: 1
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in December
Sula, MT
- Average cloud cover in December: 50
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in December
Sula, MT
- Average visibility in December: 4mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
