Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The arrival of December corresponds with a shift in temperature, down from an icy 40.5°F (4.7°C) in November to a freezing cold 28°F (-2.2°C). An average low-temperature of 16°F (-8.9°C) is observed during December nights.Humidity
In December, the average relative humidity in Van Norman is 79%.Rainfall
In Van Norman, in December, it is raining for 4.6 days, with typically 0.71" (18mm) of accumulated precipitation. In Van Norman, Montana, during the entire year, the rain falls for 104.8 days and collects up to 13.03" (331mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. December is the month with the most snowfall. Snow falls for 12.5 days and accumulates 4.45" (113mm) 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 the month, sunrise is at 7:32 am and sunset at 4:17 pm. On the last day of December, sunrise is at 7:52 am and sunset at 4:25 pm MST.
Sunshine
In Van Norman, the average sunshine in December is 5h.UV index
December is the month with the lowest UV index in Van Norman, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In December, the maximum UV index of 1 suggests these recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How many days does it rain in December?
What is the snowiest month?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Van Norman have in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Van Norman have in December?
What is the month with the lowest UV index?
What is the UV index intensity in December in Van Norman?
Average temperature in December
Van Norman, MT
- Average high temperature in December: 28°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (27.7°F).
- Average low temperature in December: 16°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (14.7°F).
Average pressure in December
Van Norman, MT
- Average pressure in December: 30.12"Hg
The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in December
Van Norman, MT
- Average wind speed in December: 10.4mph
The windiest month (with the highest average wind speed) is April (12mph).
The calmest month (with the lowest average wind speed) is February (9.9mph).
Average humidity in December
Van Norman, MT
- Average humidity in December: 79%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is August (40%).
Average rainfall in December
Van Norman, MT
- Average rainfall in December: 0.71"
The wettest months (with the highest rainfall) are May and June (1.89").
The driest month (with the least rainfall) is November (0.63").
Average rainfall days in December
Van Norman, 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 February (3.7 days).
Average snowfall in December
Van Norman, MT
- Average snowfall in December: 4.45"
The month with the highest snowfall is December (4.45").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Van Norman, MT
- Average snowfall days in December: 12.5 days
The month with the highest number of snowfall days is December (12.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Van Norman, MT
- Average daylight in December: 8h and 3min
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 0min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The months with the least sunshine are January and February (Average sunshine: 4h and 54min).
Average sunshine days in December
Van Norman, MT
- Average sunshine days in December: 16.7 days
The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is April (12.3 days).
Average UV index in December
Van Norman, MT
- Average UV index in December: 1
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Van Norman, MT
- Average cloud cover in December: 48
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 16).
Average visibility in December
Van Norman, MT
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Van Norman, Montana, USA
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