December weather forecastBallantine, MT
December
Weather in December
December, the first month of the winter in Ballantine, is also a subzero cold month, with an average temperature ranging between max 31.1°F (-0.5°C) and min 18.9°F (-7.3°C).Temperature
With an average high-temperature of 31.1°F (-0.5°C) and an average low-temperature of 18.9°F (-7.3°C), December is the coldest month.Humidity
In Ballantine, the average relative humidity in December is 74%.Rainfall
In Ballantine, in December, during 6.8 rainfall days, 0.75" (19mm) of precipitation is typically accumulated. Throughout the year, there are 128.5 rainfall days, and 14.69" (373mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. In Ballantine, in December, snow falls for 12.8 days, with typically accumulated 5.24" (133mm) of snow. In Ballantine, during the entire year, snow falls for 64.5 days and aggregates up to 31.18" (792mm) of snow.Daylight
December has the shortest days of the year in Ballantine, with an average of 8h and 42min of daylight.On the first day of December in Ballantine, sunrise is at 7:34 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:54 am and sunset at 4:37 pm MST.
Sunshine
The average sunshine in December in Ballantine is 5.5h.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 low health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: In December, the maximum UV index of 2 suggests this advice:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Ballantine, 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
Ballantine, 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
Ballantine, 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
Ballantine, 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
Ballantine, 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
Ballantine, 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
Ballantine, 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
Ballantine, 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
Ballantine, 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
Ballantine, 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
Ballantine, 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
Ballantine, 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
Ballantine, 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).
