December weather forecastBillings, MT
December
Weather in December
Billings welcomes December with wintery conditions as temperatures descend down to 18.9°F (-7.3°C) to 31.1°F (-0.5°C) and snowfall increases to 5.24" (133mm). The month stands as a precursor to the full-throttle winter of January. As the snow builds, the city is transformed into a winter wonderland, rounding off the year with a festive spirit.Temperature
December is the month when Billings sees the lowest average temperatures, with a high of 31.1°F (-0.5°C) and a low of 18.9°F (-7.3°C).Humidity
The average relative humidity in December is 74%.Rainfall
In Billings, in December, during 6.8 rainfall days, 0.75" (19mm) of precipitation is typically accumulated. In Billings, during the entire year, the rain falls for 128.5 days and collects up to 14.69" (373mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. In Billings, in December, snow falls for 12.8 days, with typically accumulated 5.24" (133mm) of snow. Throughout the year, there are 64.5 snowfall days, and 31.18" (792mm) of snow is accumulated.Daylight
With an average of 8h and 42min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:35 am and sunset at 4:31 pm. On the last day of December, sunrise is at 7:54 am and sunset at 4:39 pm MST.
Sunshine
In December, the average sunshine is 5.5h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the average person.Note: In December, the maximum UV index of 2 translates into these guidelines:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Billings, MT
- Average high temperature in December: 31.1°F
The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is December (31.1°F).
- Average low temperature in December: 18.9°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is February (18.3°F).
Average pressure in December
Billings, 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 (29.86"Hg).
Average wind speed in December
Billings, MT
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity in December
Billings, MT
- Average humidity in December: 74%
The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is August (40%).
Average rainfall in December
Billings, MT
- Average rainfall in December: 0.75"
The wettest month (with the highest rainfall) is May (2.13").
The driest month (with the least rainfall) is July (0.71").
Average rainfall days in December
Billings, MT
- Average rainfall days in December: 6.8 days
The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in December
Billings, MT
- Average snowfall in December: 5.24"
The month with the highest snowfall is February (6.5").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Billings, MT
- Average snowfall days in December: 12.8 days
The month with the highest number of snowfall days is February (13.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Billings, 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 30min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).
Average sunshine days in December
Billings, MT
- Average sunshine days in December: 14.9 days
The month with the most sunshine days is September (18.8 days).
The month with the least sunshine days is April (9.9 days).
Average UV index in December
Billings, MT
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Billings, MT
- Average cloud cover in December: 43
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 15).
Average visibility in December
Billings, 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).
