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 marked by a distinct decrease in the average high-temperature, falling from a cold 37.8°F (3.2°C) in November to a subzero cold 23.2°F (-4.9°C). The average temperature during December nights dips to a frigid cold 11.3°F (-11.5°C).Humidity
The average relative humidity in December is 87%.Rainfall
In Grassy Butte, during December, the rain falls for 3.3 days and regularly aggregates up to 0.51" (13mm) of precipitation. In Grassy Butte, during the entire year, the rain falls for 91.6 days and collects up to 12.64" (321mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. December is the month with the most snowfall. Snow falls for 11.2 days and accumulates 3.07" (78mm) of snow.Daylight
The month with the shortest days is December, with an average of 8h and 30min of daylight.On the first day of the month, sunrise is at 7:20 am and sunset at 4:04 pm. On the last day of December, sunrise is at 7:40 am and sunset at 4:12 pm MST.
Sunshine
The months with the least sunshine are January and December, with an average of 4h of sunshine.UV index
The months with the lowest UV index are February and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the average person.Note: An average UV index of 1 in December transforms into this advice:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. It's recommended to limit sun exposure when its radiation is at its peak during midday. To cut down UV radiation exposure by about half, sport a wide-brim hat. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
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 much does it rain in December?
When does it snow the most in Grassy Butte?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Grassy Butte have in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Grassy Butte have in December?
What is the month with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Grassy Butte, ND
- Average high temperature in December: 23.2°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (21.4°F).
- Average low temperature in December: 11.3°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (7.3°F).
Average pressure in December
Grassy Butte, ND
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in December
Grassy Butte, ND
- Average wind speed in December: 9.9mph
The windiest month (with the highest average wind speed) is April (11mph).
The calmest month (with the lowest average wind speed) is August (8.9mph).
Average humidity in December
Grassy Butte, ND
- Average humidity in December: 87%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (49%).
Average rainfall in December
Grassy Butte, ND
- Average rainfall in December: 0.51"
The wettest month (with the highest rainfall) is June (1.85").
The driest months (with the least rainfall) are January and February (0.43").
Average rainfall days in December
Grassy Butte, ND
- Average rainfall days in December: 3.3 days
The month with the highest number of rainy days is June (12.6 days).
The month with the least rainy days is February (2.9 days).
Average snowfall in December
Grassy Butte, ND
- Average snowfall in December: 3.07"
The month with the highest snowfall is December (3.07").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Grassy Butte, ND
- Average snowfall days in December: 11.2 days
The months with the highest number of snowfall days are January and December (11.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Grassy Butte, ND
- 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: 4h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 36min).
The months with the least sunshine are January and December (Average sunshine: 4h and 0min).
Average sunshine days in December
Grassy Butte, ND
- Average sunshine days in December: 18.4 days
The month with the most sunshine days is September (20.5 days).
The month with the least sunshine days is April (14.9 days).
Average UV index in December
Grassy Butte, ND
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in December
Grassy Butte, ND
- Average cloud cover in December: 58
The month with the most cloud cover is February (Cloud cover 61).
The months with the least cloud cover are July and August (Cloud cover 19).
Average visibility in December
Grassy Butte, ND
- 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).
Grassy Butte, North Dakota, USA
Weather forecast for your location
2. Allow the app to use your location