December weather forecastBrookfield, WI
December
Weather in December
With the arrival of December, winter sets in fully in Brookfield, bringing with it chilly temperatures, increased snowfall, and fewer hours of daylight. The average high temperatures dip further to 32°F (0°C), cementing December's position as one of the year's coldest months. The increased snow cover transforms the city into a winter wonderland, while the cool temperatures foster a festive ambiance. Despite the cold, the snow-laden landscapes provide a mesmerizing aesthetic, making the city's winter a spectacle in itself. As the year closes, the weather in December offers a pristine, white farewell fitting for Wisconsin's winter.Temperature
With December's arrival, Brookfield's weather changes as the average high-temperature falls from a frosty 43.5°F (6.4°C) in November to an icy 32°F (0°C). Brookfield observes an average low-temperature of 23°F (-5°C) during the slightly cooler nights of December.Humidity
The average relative humidity in December is 82%.Rainfall
December is the month with the least rainfall. Rain falls for 5.4 days and accumulates 0.75" (19mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Brookfield. In Brookfield, in December, during 10.2 snowfall days, 1.77" (45mm) of snow is typically accumulated. In Brookfield, during the entire year, snow falls for 47.4 days and aggregates up to 12.48" (317mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 6min of daylight.On the first day of December, sunrise is at 7:04 am and sunset at 4:18 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:27 pm CST.
Sunshine
In Brookfield, Wisconsin, the average sunshine in December is 4h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: The UV index of 1 in December translates into these instructions:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Brookfield, WI
- Average high temperature in December: 32°F
The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (25.3°F).
- Average low temperature in December: 23°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).
Average pressure in December
Brookfield, WI
- Average pressure in December: 30.08"Hg
The months with the highest atmospheric pressure are January, February and March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Brookfield, WI
- Average wind speed in December: 10.4mph
The windiest month (with the highest average wind speed) is January (11mph).
The calmest month (with the lowest average wind speed) is July (6.9mph).
Average humidity in December
Brookfield, WI
- Average humidity in December: 82%
The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April, October and November (76%).
Average rainfall in December
Brookfield, WI
- Average rainfall in December: 0.75"
The wettest month (with the highest rainfall) is July (2.6").
The driest month (with the least rainfall) is December (0.75").
Average rainfall days in December
Brookfield, WI
- Average rainfall days in December: 5.4 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in December
Brookfield, WI
- Average snowfall in December: 1.77"
The month with the highest snowfall is January (3.39").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Brookfield, WI
- Average snowfall days in December: 10.2 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Brookfield, 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: 4h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in December
Brookfield, WI
- Average sunshine days in December: 18.6 days
The month with the most sunshine days is December (18.6 days).
The month with the least sunshine days is July (12.1 days).
Average UV index in December
Brookfield, 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 and December (UV index 1).
Average cloud cover in December
Brookfield, WI
- Average cloud cover in December: 60
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in December
Brookfield, WI
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
