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 onset of December coincides with a reduction in the average high-temperature, falling from a wintry 40.5°F (4.7°C) in November to a subzero cold 28°F (-2.2°C). Throughout December, an average low-temperature of 16°F (-8.9°C) is experienced.Humidity
In December, the average relative humidity is 79%.Rainfall
In December, in Cohagen, the rain falls for 4.6 days. Throughout December, 0.71" (18mm) of precipitation is accumulated. Throughout the year, there are 104.8 rainfall days, and 13.03" (331mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall in Cohagen, Montana. The month with the most snowfall is December, when snow falls for 12.5 days and typically aggregates up to 4.45" (113mm) 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 7:32 am and sunset at 4:19 pm. On the last day of the month, sunrise is at 7:52 am and sunset at 4:27 pm MST.
Sunshine
In Cohagen, the average sunshine in December is 5h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: An average maximum UV index of 1 in December leads to these recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
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?
When does it snow the most?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Cohagen have in December?
When is the lowest UV index?
What is the UV index intensity in December in Cohagen?
Average temperature in December
Cohagen, 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
Cohagen, 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
Cohagen, 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
Cohagen, 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
Cohagen, 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
Cohagen, 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
Cohagen, 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
Cohagen, 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
Cohagen, 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 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
Cohagen, 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
Cohagen, 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
Cohagen, 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
Cohagen, 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).
Cohagen, Montana, USA
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