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
Welcoming December, Prairie du Sac observes a shift in the average high-temperature, falling from November's wintry 42.3°F (5.7°C) to a subzero cold 29.5°F (-1.4°C). Throughout December, Prairie du Sac records an average temperature of 19.4°F (-7°C) at night.Humidity
In Prairie du Sac, the average relative humidity in December is 85%.Rainfall
In December, in Prairie du Sac, the rain falls for 4.8 days. Throughout December, 0.71" (18mm) of precipitation is accumulated. In Prairie du Sac, during the entire year, the rain falls for 122.6 days and collects up to 16.02" (407mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Prairie du Sac, Wisconsin, during December, snow falls for 10.5 days and regularly aggregates up to 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, in Prairie du Sac, sunrise is at 7:31 am and sunset at 4:33 pm CST.
Sunshine
The average sunshine in December is 3.8h.UV index
The months with the lowest UV index in Prairie du Sac are January, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the ordinary person.Note: An average maximum UV index of 1 in December leads to these recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Frequently asked questions
How cold is it in Prairie du Sac in December?
What is the average humidity in December in Prairie du Sac?
How many days does it rain in December in Prairie du Sac?
How many days does it snow in December in Prairie du Sac?
What is the month with the shortest days in Prairie du Sac?
How many hours of daylight does Prairie du Sac have in December?
When are sunrise and sunset in December in Prairie du Sac?
How many hours of sunshine does Prairie du Sac have in December?
What is the month with the lowest UV index in Prairie du Sac?
What is the UV index intensity in December in Prairie du Sac?
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 5min
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).
Prairie du Sac, Wisconsin, USA
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