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 is marked by a decrease in temperature, transitioning from a cold 36.7°F (2.6°C) in November to a subzero cold 23.4°F (-4.8°C). Winter records a consistent low-temperature of 12.7°F (-10.7°C) during December nights.Humidity
The average relative humidity in December is 90%.Rainfall
In December, the rain falls for 3 days. Throughout December, 1.3" (33mm) of precipitation is accumulated. In Winter, during the entire year, the rain falls for 109.7 days and collects up to 20.04" (509mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. December is the month with the most snowfall in Winter. Snow falls for 14.9 days and accumulates 6.5" (165mm) of snow.Daylight
The month with the shortest days in Winter, Wisconsin, is December, with an average of 8h and 42min of daylight.On the first day of the month, sunrise is at 7:25 am and sunset at 4:21 pm. On the last day of December, in Winter, Wisconsin, sunrise is at 7:45 am and sunset at 4:29 pm CST.
Sunshine
The average sunshine in December is 2.5h.UV index
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Winter. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: During December, 1 as the daily maximum UV index converts into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Boost your sun resistance with garments that are densely woven yet spacious. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Frequently asked questions
How cold is December in Winter?
What is the average humidity in December in Winter?
How much does it rain in Winter in December?
When does it snow the most in Winter?
How much does it snow in Winter in December?
What is the month with the shortest days in Winter?
What is the average length of the day in December in Winter?
When are sunrise and sunset in December in Winter?
How many hours of sunshine does Winter have in December?
When is the lowest UV index in Winter?
What is the UV index reading in December in Winter?
Average temperature in December
Winter, WI
- Average high temperature in December: 23.4°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (17.6°F).
- Average low temperature in December: 12.7°F
The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (5.2°F).
Average pressure in December
Winter, WI
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Winter, WI
- Average wind speed in December: 8mph
The windiest month (with the highest average wind speed) is April (8.6mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in December
Winter, WI
- Average humidity in December: 90%
The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is May (73%).
Average rainfall in December
Winter, WI
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is January (0.63").
Average rainfall days in December
Winter, WI
- Average rainfall days in December: 3 days
The month with the highest number of rainy days is June (15.5 days).
The month with the least rainy days is February (1.3 days).
Average snowfall in December
Winter, WI
- Average snowfall in December: 6.5"
The month with the highest snowfall is December (6.5").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Winter, WI
- Average snowfall days in December: 14.9 days
The month with the highest number of snowfall days is January (15.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Winter, WI
- Average daylight in December: 8h and 4min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in December: 2h and 3min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in December
Winter, WI
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is October (17.7 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in December
Winter, 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, February, November and December (UV index 1).
Average cloud cover in December
Winter, WI
- Average cloud cover in December: 75
The month with the most cloud cover is January (Cloud cover 79).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in December
Winter, WI
- Average visibility in December: 4mi
The months with the highest visibility are May, June and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
Winter, Wisconsin, USA
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