December weather forecastSun Prairie, MT
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Sun Prairie, Montana, with an average temperature ranging between max 29.8°F (-1.2°C) and min 18.1°F (-7.7°C).Temperature
December, characterized by an average high temperature of 29.8°F (-1.2°C) and a low temperature of 18.1°F (-7.7°C), is generally the coldest month.Humidity
In December, the average relative humidity is 76%.Rainfall
In Sun Prairie, in December, it is raining for 4.6 days, with typically 0.63" (16mm) of accumulated precipitation. In Sun Prairie, during the entire year, the rain falls for 102.6 days and collects up to 11.89" (302mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. In Sun Prairie, Montana, in December, snow falls for 12.5 days, with typically accumulated 4.25" (108mm) of snow. In Sun Prairie, during the entire year, snow falls for 66.6 days and aggregates up to 32.17" (817mm) of snow.Daylight
December has the shortest days of the year, with an average of 8h and 30min of daylight.On the first day of December in Sun Prairie, sunrise is at 7:53 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 8:13 am and sunset at 4:44 pm MST.
Sunshine
January, February and December, with an average of 5.5h of sunshine, are months with the least sunshine.UV index
January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for ordinary individuals.Note: A daily high UV index of 2 in December leads to these guidelines:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. 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
Sun Prairie, MT
- Average high temperature in December: 29.8°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is December (29.8°F).
- Average low temperature in December: 18.1°F
The month with the highest average low temperature is August (57.6°F).
The coldest month (with the lowest average low temperature) is December (18.1°F).
Average pressure in December
Sun Prairie, MT
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in December
Sun Prairie, MT
- Average wind speed in December: 10.9mph
The windiest month (with the highest average wind speed) is November (11.2mph).
The calmest month (with the lowest average wind speed) is August (7.5mph).
Average humidity in December
Sun Prairie, 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 (41%).
Average rainfall in December
Sun Prairie, MT
- Average rainfall in December: 0.63"
The wettest month (with the highest rainfall) is June (1.97").
The driest months (with the least rainfall) are January and July (0.59").
Average rainfall days in December
Sun Prairie, MT
- Average rainfall days in December: 4.6 days
The month with the highest number of rainy days is May (14.5 days).
The month with the least rainy days is November (4.4 days).
Average snowfall in December
Sun Prairie, MT
- Average snowfall in December: 4.25"
The month with the highest snowfall is February (5.28").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Sun Prairie, MT
- Average snowfall days in December: 12.5 days
The month with the highest number of snowfall days is February (12.6 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Sun Prairie, MT
- Average daylight in December: 8h and 30min
The month with the longest days is June (Average daylight: 15h and 54min).
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
Sun Prairie, MT
- Average sunshine days in December: 17.3 days
The month with the most sunshine days is September (20.5 days).
The month with the least sunshine days is April (11.6 days).
Average UV index in December
Sun Prairie, 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
Sun Prairie, MT
- Average cloud cover in December: 42
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 13).
Average visibility in December
Sun Prairie, 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).
