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
Temperature records mark December as the coldest month, with highs averaging 26.2°F (-3.2°C) and lows at 13.1°F (-10.5°C).Humidity
In Marysville, the average relative humidity in December is 86%.Rainfall
The months with the least rainfall are January and December Rain falls for 6.7 days and accumulates 0.59" (15mm) of rain.Snowfall
January through June, September through December are months with snowfall. In Marysville, during December, snow falls for 13.6 days and regularly aggregates up to 4.61" (117mm) of snow. In Marysville, during the entire year, snow falls for 92.7 days and aggregates up to 45.59" (1158mm) of snow.Daylight
With an average of 8h and 36min of daylight, December has the shortest days of the year in Marysville, Montana.On the first day of December, sunrise is at 7:54 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 8:13 am and sunset at 4:51 pm MST.
Sunshine
The months with the least sunshine are January and December, with an average of 5.6h of sunshine.UV index
The average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 2 in December translates into these instructions:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. To guard against the harmful effects of the Sun, minimize exposure during midday. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
How cold is it in Marysville in December?
What is the average humidity in December?
What is the driest month?
How many days does it rain in December?
How much does it snow in Marysville in December?
What is the month with the shortest days?
How many hours of daylight does Marysville have in December?
When is the sunrise / sunset in December?
What are the months with the least sunshine?
How many hours of sunshine does Marysville have in December?
What is the UV index reading in December?
Average temperature in December
Marysville, MT
- Average high temperature in December: 26.2°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is December (26.2°F).
- Average low temperature in December: 13.1°F
The month with the highest average low temperature is August (49.3°F).
The coldest month (with the lowest average low temperature) is December (13.1°F).
Average pressure in December
Marysville, MT
- Average pressure in December: 30.16"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Marysville, MT
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is November (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in December
Marysville, MT
- Average humidity in December: 86%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are July and August (48%).
Average rainfall in December
Marysville, MT
- Average rainfall in December: 0.59"
The wettest month (with the highest rainfall) is June (2.6").
The driest months (with the least rainfall) are January and December (0.59").
Average rainfall days in December
Marysville, MT
- Average rainfall days in December: 6.7 days
The month with the highest number of rainy days is May (16.1 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in December
Marysville, MT
- Average snowfall in December: 4.61"
The month with the highest snowfall is February (7.13").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Marysville, MT
- Average snowfall days in December: 13.6 days
The month with the highest number of snowfall days is February (15.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Marysville, MT
- Average daylight in December: 8h and 4min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in December: 5h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The months with the least sunshine are January and December (Average sunshine: 5h and 36min).
Average sunshine days in December
Marysville, MT
- Average sunshine days in December: 16.5 days
The month with the most sunshine days is July (18.8 days).
The month with the least sunshine days is May (10.6 days).
Average UV index in December
Marysville, MT
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in December
Marysville, MT
- Average cloud cover in December: 46
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 14).
Average visibility in December
Marysville, MT
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Marysville, Montana, USA
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