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 witnesses a clear shift in the average high-temperature, dropping from a wintry 34.9°F (1.6°C) in November to a subzero cold 18.3°F (-7.6°C). In the month of December, Saint Thomas's average low-temperature falls to an extreme cold 7.5°F (-13.6°C).Humidity
In Saint Thomas, the average relative humidity in December is 89%.Rainfall
In Saint Thomas, in December, during 2.5 rainfall days, 0.79" (20mm) of precipitation is typically accumulated. In Saint Thomas, during the entire year, the rain falls for 97.8 days and collects up to 15.83" (402mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. The month with the most snowfall is December, when snow falls for 14 days and typically aggregates up to 3.94" (100mm) of snow.Daylight
December has the shortest days of the year, with an average of 8h and 24min of daylight.On the first day of the month, sunrise is at 8:01 am and sunset at 4:36 pm. On the last day of December, sunrise is at 8:22 am and sunset at 4:44 pm CST.
Sunshine
In Saint Thomas, North Dakota, the average sunshine in December is 3.8h.UV index
In December, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 2 during December leads to these advisories:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
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 in Saint Thomas?
How many hours of daylight does Saint Thomas have in December?
When is the sunrise / sunset in December in Saint Thomas?
How long on average sun shines in December?
What is the UV index reading in December?
Average temperature in December
Saint Thomas, ND
- Average high temperature in December: 18.3°F
The warmest month (with the highest average high temperature) is August (80.4°F).
The month with the lowest average high temperature is January (14.7°F).
- Average low temperature in December: 7.5°F
The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (0.9°F).
Average pressure in December
Saint Thomas, ND
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Saint Thomas, ND
- Average wind speed in December: 9.6mph
The windiest month (with the highest average wind speed) is October (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (8.1mph).
Average humidity in December
Saint Thomas, ND
- Average humidity in December: 89%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (59%).
Average rainfall in December
Saint Thomas, ND
- Average rainfall in December: 0.79"
The wettest month (with the highest rainfall) is June (2.8").
The driest months (with the least rainfall) are January and February (0.55").
Average rainfall days in December
Saint Thomas, ND
- Average rainfall days in December: 2.5 days
The month with the highest number of rainy days is June (15.9 days).
The month with the least rainy days is February (1.6 days).
Average snowfall in December
Saint Thomas, ND
- Average snowfall in December: 3.94"
The month with the highest snowfall is December (3.94").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Saint Thomas, ND
- Average snowfall days in December: 14 days
The month with the highest number of snowfall days is January (14.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Saint Thomas, 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 5min
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 12min).
Average sunshine days in December
Saint Thomas, ND
- Average sunshine days in December: 17 days
The month with the most sunshine days is August (19.8 days).
The month with the least sunshine days is June (11.5 days).
Average UV index in December
Saint Thomas, 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
Saint Thomas, 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
Saint Thomas, 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).
Saint Thomas, North Dakota, USA
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