December weather forecastLake McDonald, MT
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Lake McDonald, Montana, with an average temperature fluctuating between 25.7°F (-3.5°C) and 13.8°F (-10.1°C).Temperature
Lake McDonald's coldest month, December, registers temperatures that range from a high of 25.7°F (-3.5°C) to a low of 13.8°F (-10.1°C).Humidity
In Lake McDonald, Montana, the average relative humidity in December is 91%.Rainfall
In Lake McDonald, in December, it is raining for 8.9 days, with typically 1.02" (26mm) of accumulated precipitation. Throughout the year, there are 126.4 rainfall days, and 11.22" (285mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. In Lake McDonald, in December, snow falls for 19.1 days, with typically accumulated 6.77" (172mm) of snow. Throughout the year, there are 97 snowfall days, and 33.86" (860mm) 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 4:42 pm. On the last day of December, sunrise is at 8:27 am and sunset at 4:50 pm MST.
Sunshine
In December, the average sunshine is 4h.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 reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index, 1 in December, converts into the following recommendations:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Stay sun-safe with clothing that is both closely woven and worn loosely. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Lake McDonald, MT
- Average high temperature in December: 25.7°F
The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is December (25.7°F).
- Average low temperature in December: 13.8°F
The month with the highest average low temperature is August (45.5°F).
The coldest month (with the lowest average low temperature) is February (13.5°F).
Average pressure in December
Lake McDonald, 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
Lake McDonald, MT
- Average wind speed in December: 3.7mph
The windiest month (with the highest average wind speed) is April (4.6mph).
The calmest months (with the lowest average wind speed) are August and December (3.7mph).
Average humidity in December
Lake McDonald, MT
- Average humidity in December: 91%
The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is August (55%).
Average rainfall in December
Lake McDonald, MT
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is June (1.42").
The driest month (with the least rainfall) is August (0.43").
Average rainfall days in December
Lake McDonald, MT
- Average rainfall days in December: 8.9 days
The month with the highest number of rainy days is April (15.8 days).
The month with the least rainy days is August (6.3 days).
Average snowfall in December
Lake McDonald, MT
- Average snowfall in December: 6.77"
The month with the highest snowfall is January (7.72").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Lake McDonald, MT
- Average snowfall days in December: 19.1 days
The month with the highest number of snowfall days is December (19.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Lake McDonald, MT
- Average daylight in December: 8h and 24min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in December: 4h and 0min
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 30min).
Average sunshine days in December
Lake McDonald, MT
- Average sunshine days in December: 11.8 days
The month with the most sunshine days is July (21.5 days).
The month with the least sunshine days is March (7.7 days).
Average UV index in December
Lake McDonald, MT
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in December
Lake McDonald, MT
- Average cloud cover in December: 61
The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in December
Lake McDonald, 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).
