December weather forecastBelleville, WI
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Belleville, Wisconsin, with an average temperature varying between 30.7°F (-0.7°C) and 20.8°F (-6.2°C).Temperature
The onset of December is marked by a decrease in temperature, transitioning from a chilly 42.8°F (6°C) in November to a subzero cold 30.7°F (-0.7°C). An average nighttime temperature of 20.8°F (-6.2°C) is recorded in Belleville during December.Humidity
The average relative humidity in December is 84%.Rainfall
In Belleville, Wisconsin, in December, it is raining for 5.8 days, with typically 0.71" (18mm) of accumulated precipitation. Throughout the year, in Belleville, there are 124.7 rainfall days, and 15.16" (385mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Belleville, during December, snow falls for 9.4 days and regularly aggregates up to 1.34" (34mm) of snow. In Belleville, during the entire year, snow falls for 48 days and aggregates up to 10.43" (265mm) of snow.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year in Belleville.On the first day of the month, sunrise is at 7:09 am and sunset at 4:24 pm. On the last day of December, in Belleville, sunrise is at 7:28 am and sunset at 4:34 pm CST.
Sunshine
The average sunshine in December is 3.9h.UV index
January, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Belleville, Wisconsin. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: A daily high UV index of 1 in December leads to these guidelines:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Belleville, WI
- Average high temperature in December: 30.7°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (24.4°F).
- Average low temperature in December: 20.8°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).
Average pressure in December
Belleville, WI
- Average pressure in December: 30.09"Hg
The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Belleville, WI
- Average wind speed in December: 9.5mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in December
Belleville, WI
- Average humidity in December: 84%
The month with the highest relative humidity is January (89%).
The months with the lowest relative humidity are April and October (77%).
Average rainfall in December
Belleville, WI
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is June (2.32").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in December
Belleville, WI
- Average rainfall days in December: 5.8 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (3.5 days).
Average snowfall in December
Belleville, WI
- Average snowfall in December: 1.34"
The months with the highest snowfall are January and February (2.52").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Belleville, WI
- Average snowfall days in December: 9.4 days
The month with the highest number of snowfall days is January (13 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Belleville, WI
- Average daylight in December: 9h and 6min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 3h and 54min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in December
Belleville, WI
- Average sunshine days in December: 18.6 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in December
Belleville, WI
- Average UV index in December: 1
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in December
Belleville, WI
- Average cloud cover in December: 61
The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are August and September (Cloud cover 34).
Average visibility in December
Belleville, WI
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, July, August and September (5mi).
