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 beginning of December signals a clear reduction in the average high-temperature, falling from a wintry 32.2°F (0.1°C) in November to a freezing cold 16.7°F (-8.5°C). Shell Valley's December nights cool down to an average low-temperature of 5.9°F (-14.5°C).Humidity
In December, the average relative humidity is 91%.Rainfall
In Shell Valley, in December, it is raining for 2.7 days, with typically 0.71" (18mm) of accumulated precipitation. Throughout the year, there are 110.9 rainfall days, and 17.95" (456mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 15.7 days. Throughout December, 3.98" (101mm) of snow is accumulated. In Shell Valley, during the entire year, snow falls for 86.8 days and aggregates up to 23.78" (604mm) of snow.Daylight
The month with the shortest days is December, with an average of 8h and 18min of daylight.On the first day of the month, sunrise is at 8:12 am and sunset at 4:45 pm. On the last day of December, sunrise is at 8:32 am and sunset at 4:53 pm CST.
Sunshine
The average sunshine in December is 3.2h.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In December, the maximum UV index of 1 suggests this advice:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to 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 many days 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 Shell Valley have in December?
When is the sunrise / sunset in December in Shell Valley?
How many hours of sunshine does Shell Valley have in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Shell Valley, ND
- Average high temperature in December: 16.7°F
The warmest month (with the highest average high temperature) is August (77.9°F).
The month with the lowest average high temperature is January (14.2°F).
- Average low temperature in December: 5.9°F
The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is January (0.5°F).
Average pressure in December
Shell Valley, ND
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Shell Valley, ND
- Average wind speed in December: 10.2mph
The windiest month (with the highest average wind speed) is October (11mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).
Average humidity in December
Shell Valley, ND
- Average humidity in December: 91%
The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is August (60%).
Average rainfall in December
Shell Valley, ND
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is June (3.27").
The driest month (with the least rainfall) is February (0.43").
Average rainfall days in December
Shell Valley, ND
- Average rainfall days in December: 2.7 days
The month with the highest number of rainy days is June (18.8 days).
The month with the least rainy days is February (2 days).
Average snowfall in December
Shell Valley, ND
- Average snowfall in December: 3.98"
The month with the highest snowfall is November (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Shell Valley, ND
- Average snowfall days in December: 15.7 days
The month with the highest number of snowfall days is December (15.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Shell Valley, ND
- Average daylight in December: 8h and 2min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in December: 3h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in December
Shell Valley, ND
- Average sunshine days in December: 15.6 days
The month with the most sunshine days is September (16.8 days).
The month with the least sunshine days is June (8.1 days).
Average UV index in December
Shell Valley, ND
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in December
Shell Valley, ND
- Average cloud cover in December: 67
The month with the most cloud cover is February (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in December
Shell Valley, ND
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
Shell Valley, North Dakota, USA
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