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 shift into December in Williston is characterized by a noticeable reduction in the average high-temperature, decreasing from November's wintry 37.4°F (3°C) to a subzero cold 22.1°F (-5.5°C). Williston sees an average low-temperature of 10.6°F (-11.9°C) during December.Humidity
In Williston, the average relative humidity in December is 87%.Rainfall
The month with the least rainfall is December, when the rain falls for 2.5 days and typically collects 0.35" (9mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Williston, in December, during 9 snowfall days, 1.93" (49mm) of snow is typically accumulated. Throughout the year, in Williston, there are 53.3 snowfall days, and 13.86" (352mm) of snow is accumulated.Daylight
The month with the shortest days in Williston, North Dakota, is December, with an average of 8h and 24min of daylight.On the first day of the month, sunrise is at 8:24 am and sunset at 5:02 pm. On the last day of December, in Williston, sunrise is at 8:44 am and sunset at 5:10 pm CST.
Sunshine
With an average of 4h of sunshine, December has the least sunshine of the year in Williston, North Dakota.UV index
The months with the lowest UV index in Williston are February and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 1 during December translates into the following directions:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Frequently asked questions
How cold is it in Williston in December?
What is the average humidity in December in Williston?
What is the driest month in Williston?
How many days does it rain in December in Williston?
How many days does it snow in December in Williston?
What is the month with the shortest days in Williston?
How many hours of daylight does Williston have in December?
What time are sunrise and sunset in December in Williston?
What is the month with the least sunshine in Williston?
How long on average sun shines in December in Williston?
What are the months with the lowest UV index in Williston?
What is the UV index intensity in December in Williston?
Average temperature in December
Williston, ND
- Average high temperature in December: 22.1°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is February (20.8°F).
- Average low temperature in December: 10.6°F
The month with the highest average low temperature is July (61.3°F).
The coldest months (with the lowest average low temperature) are January and February (7°F).
Average pressure in December
Williston, 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
Williston, ND
- Average wind speed in December: 9.7mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is February (8.9mph).
Average humidity in December
Williston, 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 (48%).
Average rainfall in December
Williston, ND
- Average rainfall in December: 0.35"
The wettest month (with the highest rainfall) is June (2.05").
The driest month (with the least rainfall) is December (0.35").
Average rainfall days in December
Williston, ND
- Average rainfall days in December: 2.5 days
The month with the highest number of rainy days is June (14.2 days).
The month with the least rainy days is December (2.5 days).
Average snowfall in December
Williston, ND
- Average snowfall in December: 1.93"
The month with the highest snowfall is February (3.07").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Williston, ND
- Average snowfall days in December: 9 days
The month with the highest number of snowfall days is February (12.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Williston, ND
- Average daylight in December: 8h and 2min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in December: 4h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 0min).
Average sunshine days in December
Williston, ND
- Average sunshine days in December: 20.4 days
The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is June (13.5 days).
Average UV index in December
Williston, 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
Williston, ND
- Average cloud cover in December: 57
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is July (Cloud cover 19).
Average visibility in December
Williston, ND
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Williston, North Dakota, USA
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