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
Marion's December weather, with an average high temperature of 27.1°F (-2.7°C) and an average low temperature of 16.2°F (-8.8°C), tends to be the coldest of the year.Humidity
The average relative humidity in December in Marion is 90%.Rainfall
In Marion, Montana, in December, during 6.5 rainfall days, 1.57" (40mm) of precipitation is typically accumulated. Throughout the year, there are 129.8 rainfall days, and 16.42" (417mm) of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall in Marion. The month with the most snowfall in Marion is December, when snow falls for 21.7 days and typically aggregates up to 12.36" (314mm) of snow.Daylight
With an average of 8h and 24min of daylight, December has the shortest days of the year in Marion.On the first day of December, sunrise is at 8:08 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 8:28 am and sunset at 4:55 pm MST.
Sunshine
In December, the average sunshine is 3.8h.UV index
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Marion. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: In December, the UV index of 1 transforms into the following advice:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest in Marion?
How cold is it in Marion in December?
What is the average humidity in December in Marion?
How much does it rain in Marion in December?
What is the snowiest month in Marion?
How much does it snow in Marion in December?
What is the month with the shortest days in Marion?
How many hours of daylight does Marion have in December?
When are sunrise and sunset in December in Marion?
How many hours of sunshine does Marion have in December?
What are the months with the lowest UV index in Marion?
How high is the UV index in December in Marion?
Average temperature in December
Marion, MT
- Average high temperature in December: 27.1°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is December (27.1°F).
- Average low temperature in December: 16.2°F
The month with the highest average low temperature is July (48.4°F).
The coldest months (with the lowest average low temperature) are January and December (16.2°F).
Average pressure in December
Marion, 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 (29.91"Hg).
Average wind speed in December
Marion, MT
- Average wind speed in December: 3.6mph
The windiest month (with the highest average wind speed) is April (4.7mph).
The calmest months (with the lowest average wind speed) are August and December (3.6mph).
Average humidity in December
Marion, MT
- Average humidity in December: 90%
The month with the highest relative humidity is January (93%).
The months with the lowest relative humidity are July and August (52%).
Average rainfall in December
Marion, MT
- Average rainfall in December: 1.57"
The wettest month (with the highest rainfall) is June (1.89").
The driest month (with the least rainfall) is July (0.59").
Average rainfall days in December
Marion, MT
- Average rainfall days in December: 6.5 days
The month with the highest number of rainy days is April (15.9 days).
The month with the least rainy days is December (6.5 days).
Average snowfall in December
Marion, MT
- Average snowfall in December: 12.36"
The month with the highest snowfall is December (12.36").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Marion, MT
- Average snowfall days in December: 21.7 days
The month with the highest number of snowfall days is January (22.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Marion, MT
- Average daylight in December: 8h and 2min
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: 3h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in December
Marion, MT
- Average sunshine days in December: 9.5 days
The month with the most sunshine days is July (20.8 days).
The month with the least sunshine days is February (7.1 days).
Average UV index in December
Marion, 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
Marion, MT
- Average cloud cover in December: 63
The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in December
Marion, 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).
Marion, Montana, USA
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