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
December is the month that records the lowest temperatures, with averages ranging from a high of 26.2°F (-3.2°C) to a low of 13.1°F (-10.5°C).Humidity
In Wilborn, the average relative humidity in December is 86%.Rainfall
January and December are months with the least rain when the rain falls for 6.7 days and typically aggregates up to 0.59" (15mm) of rain.Snowfall
Months with snowfall are January through June, September through December. In Wilborn, in December, snow falls for 13.6 days, with typically accumulated 4.61" (117mm) of snow. In Wilborn, during the entire year, snow falls for 92.7 days and aggregates up to 45.59" (1158mm) of snow.Daylight
December has the shortest days of the year, with an average of 8h and 36min of daylight.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 8:14 am and sunset at 4:50 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 of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.Note: A maximum daily UV index of 2 during December morphs into the following directions:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. Avoiding the Sun during its peak radiation time around midday is a healthy practice. During bright days, sunglasses that offer UVA and UVB defense are recommended. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest?
How cold is it in December?
What is the average humidity in December?
What is the driest month?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Wilborn have in December?
When are sunrise and sunset in December?
What are the months with the least sunshine?
How many hours of sunshine does Wilborn have in December?
What is the UV index intensity in December?
Average temperature in December
Wilborn, 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
Wilborn, 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
Wilborn, 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
Wilborn, 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
Wilborn, 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
Wilborn, 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
Wilborn, 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
Wilborn, 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
Wilborn, 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
Wilborn, 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
Wilborn, 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
Wilborn, 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
Wilborn, 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).
Wilborn, Montana, USA
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