December weather forecastPrairie du Sac, WI
December
Weather in December
December, the first month of the winter in Prairie du Sac, is also a subzero cold month, with temperature in the range of an average high of 29.5°F (-1.4°C) and an average low of 19.4°F (-7°C).Temperature
Prairie du Sac's progression into December involves a drop in the average high-temperature, receding from a cold 42.3°F (5.7°C) in November to a subzero cold 29.5°F (-1.4°C). Throughout December nights, Prairie du Sac registers an average low-temperature of 19.4°F (-7°C).Humidity
In December, the average relative humidity is 85%.Rainfall
In Prairie du Sac, in December, during 4.8 rainfall days, 0.71" (18mm) of precipitation is typically accumulated. Throughout the year, there are 122.6 rainfall days, and 16.02" (407mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In Prairie du Sac, in December, snow falls for 10.5 days, with typically accumulated 1.77" (45mm) of snow. Throughout the year, there are 50.5 snowfall days, and 11.69" (297mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 7:12 am and sunset at 4:24 pm. On the last day of December, sunrise is at 7:31 am and sunset at 4:33 pm CST.
Sunshine
In Prairie du Sac, the average sunshine in December is 3.8h.UV index
The months with the lowest UV index are January, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: The UV index of 1 during December translates into the following guidance:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Prairie du Sac, WI
- Average high temperature in December: 29.5°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (22.6°F).
- Average low temperature in December: 19.4°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (10.6°F).
Average pressure in December
Prairie du Sac, 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
Prairie du Sac, WI
- Average wind speed in December: 9.2mph
The windiest month (with the highest average wind speed) is April (9.8mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in December
Prairie du Sac, WI
- Average humidity in December: 85%
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
Prairie du Sac, WI
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is June (2.48").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in December
Prairie du Sac, WI
- Average rainfall days in December: 4.8 days
The month with the highest number of rainy days is June (16.8 days).
The month with the least rainy days is February (3.1 days).
Average snowfall in December
Prairie du Sac, WI
- Average snowfall in December: 1.77"
The month with the highest snowfall is February (2.8").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Prairie du Sac, WI
- Average snowfall days in December: 10.5 days
The month with the highest number of snowfall days is January (13.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Prairie du Sac, WI
- Average daylight in December: 9h and 0min
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 0min).
- Average sunshine in December: 3h and 48min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in December
Prairie du Sac, WI
- Average sunshine days in December: 18.4 days
The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is June (9.9 days).
Average UV index in December
Prairie du Sac, WI
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in December
Prairie du Sac, WI
- Average cloud cover in December: 62
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Prairie du Sac, WI
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
