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 brings a significant decrease in the average high-temperature, moving down from an icy 34.5°F (1.4°C) in November to a freezing cold 17.8°F (-7.9°C). Throughout December, Crystal records an average temperature of 7°F (-13.9°C) at night.Humidity
In Crystal, the average relative humidity in December is 89%.Rainfall
In Crystal, in December, during 3.1 rainfall days, 0.71" (18mm) of precipitation is typically accumulated. Throughout the year, in Crystal, North Dakota, there are 99.8 rainfall days, and 16.46" (418mm) of precipitation is accumulated.Snowfall
Months with snowfall in Crystal are January through May, October through December. December is the month with the most snowfall in Crystal. Snow falls for 13.4 days and accumulates 3.62" (92mm) of snow.Daylight
With an average of 8h and 24min of daylight, December has the shortest days of the year in Crystal.On the first day of December, sunrise is at 8:02 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 8:22 am and sunset at 4:45 pm CST.
Sunshine
In December, the average sunshine in Crystal is 3.7h.UV index
The average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum daily UV index of 2 during December morphs into the following directions:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Crystal in December?
What is the average humidity in December in Crystal?
How much does it rain in Crystal in December?
What is the snowiest month in Crystal?
How much does it snow in Crystal in December?
What is the month with the shortest days in Crystal?
What is the average length of the day in December in Crystal?
When is the sunrise / sunset in December in Crystal?
How many hours of sunshine does Crystal have in December?
What is the UV index intensity in December in Crystal?
Average temperature in December
Crystal, ND
- Average high temperature in December: 17.8°F
The warmest month (with the highest average high temperature) is August (79.5°F).
The month with the lowest average high temperature is January (14.5°F).
- Average low temperature in December: 7°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (1°F).
Average pressure in December
Crystal, ND
- Average pressure in December: 30.12"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
Crystal, ND
- Average wind speed in December: 10.2mph
The windiest month (with the highest average wind speed) is October (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (8.4mph).
Average humidity in December
Crystal, ND
- Average humidity in December: 89%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is August (60%).
Average rainfall in December
Crystal, ND
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is June (3.03").
The driest month (with the least rainfall) is February (0.51").
Average rainfall days in December
Crystal, ND
- Average rainfall days in December: 3.1 days
The month with the highest number of rainy days is June (16.9 days).
The month with the least rainy days is February (2 days).
Average snowfall in December
Crystal, ND
- Average snowfall in December: 3.62"
The month with the highest snowfall is December (3.62").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Crystal, ND
- Average snowfall days in December: 13.4 days
The month with the highest number of snowfall days is January (13.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Crystal, 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 24min).
- Average sunshine in December: 3h and 4min
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 18min).
Average sunshine days in December
Crystal, ND
- Average sunshine days in December: 16.8 days
The month with the most sunshine days is August (19.9 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in December
Crystal, ND
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and November (UV index 1).
Average cloud cover in December
Crystal, ND
- Average cloud cover in December: 61
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in December
Crystal, 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).
Crystal, North Dakota, USA
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