December weather forecastKalispell, MT

December
Weather in December
December witnesses the onset of winter in full swing in Kalispell. This is the month when the landscape is painted white with significant snowfall. The short daylight hours and the less frequent sunshine contribute to the typical chill of the holiday season. When it comes to weather specifics for December, Kalispell reckons with 10.79" (274mm) of snowfall, 1.65" (42mm) of rainfall, and temperatures rotating from 14.7°F (-9.6°C) to 25.9°F (-3.4°C). The city signs off the year under a thick blanket of snow, ushering in the New Year with twinkling lights reflecting off the snowy landscape.Temperature
December is the month that records the lowest temperatures, with averages ranging from a high of 25.9°F (-3.4°C) to a low of 14.7°F (-9.6°C).Humidity
The average relative humidity in December is 90%.Rainfall
In Kalispell, in December, it is raining for 10.5 days, with typically 1.65" (42mm) of accumulated precipitation. Throughout the year, there are 142.8 rainfall days, and 17.36" (441mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. In December, it is snowing for 21.5 days. Throughout December, 10.79" (274mm) of snow is accumulated. Throughout the year, there are 104.7 snowfall days, and 51.34" (1304mm) of snow is accumulated.Daylight
With an average of 8h and 24min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 8:07 am and sunset at 4:45 pm. On the last day of December, sunrise is at 8:27 am and sunset at 4:53 pm MST.
Sunshine
In Kalispell, the average sunshine in December is 4.1h.UV index
January, February, November and December, with an average maximum UV index of 1, 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 the ordinary person.Note: The maximum daily UV index of 1 in December converts into the following recommendations:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Kalispell, MT
- Average high temperature in December: 25.9°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is December (25.9°F).
- Average low temperature in December: 14.7°F
The month with the highest average low temperature is August (46.4°F).
The coldest month (with the lowest average low temperature) is February (14.4°F).
Average pressure in December
Kalispell, MT
- Average pressure in December: 30.15"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Kalispell, MT
- Average wind speed in December: 3.8mph
The windiest month (with the highest average wind speed) is April (4.7mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in December
Kalispell, MT
- Average humidity in December: 90%
The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is August (55%).
Average rainfall in December
Kalispell, MT
- Average rainfall in December: 1.65"
The wettest month (with the highest rainfall) is June (2.05").
The driest month (with the least rainfall) is August (0.55").
Average rainfall days in December
Kalispell, MT
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is April (17.9 days).
The month with the least rainy days is August (6.6 days).
Average snowfall in December
Kalispell, MT
- Average snowfall in December: 10.79"
The month with the highest snowfall is January (11.3").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Kalispell, MT
- Average snowfall days in December: 21.5 days
The month with the highest number of snowfall days is December (21.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Kalispell, MT
- Average daylight in December: 8h and 24min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in December: 4h and 6min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Kalispell, MT
- Average sunshine days in December: 9.5 days
The month with the most sunshine days is August (21.8 days).
The month with the least sunshine days is February (6.8 days).
Average UV index in December
Kalispell, 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, November and December (UV index 1).
Average cloud cover in December
Kalispell, MT
- Average cloud cover in December: 60
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in December
Kalispell, MT
- Average visibility in December: 4mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (3mi).





