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
During the transition into December, Brill observes a decrease in the average high-temperature, falling from an icy 37.8°F (3.2°C) in November to a freezing cold 23.5°F (-4.7°C). The mean low-temperature during December nights in Brill, Wisconsin, is a frigid cold 12.9°F (-10.6°C).Humidity
In Brill, the average relative humidity in December is 91%.Rainfall
In Brill, in December, during 4 rainfall days, 1.3" (33mm) of precipitation is typically accumulated. Throughout the year, in Brill, there are 128.9 rainfall days, and 23.46" (596mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Brill, in December, during 15.7 snowfall days, 5.2" (132mm) of snow is typically accumulated. Throughout the year, there are 83.1 snowfall days, and 28.98" (736mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 8h and 48min of daylight.On the first day of the month, sunrise is at 7:27 am and sunset at 4:24 pm. On the last day of December, sunrise is at 7:47 am and sunset at 4:33 pm CST.
Sunshine
In December, the average sunshine in Brill is 2.6h.UV index
The months with the lowest UV index in Brill are January, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: An average UV index of 1 in December transforms into this advice:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold is December in Brill?
What is the average humidity in December in Brill?
How much does it rain in Brill in December?
How many days does it snow in December in Brill?
What is the month with the shortest days in Brill?
How many hours of daylight does Brill have in December?
When are sunrise and sunset in December in Brill?
How many hours of sunshine does Brill have in December?
When is the lowest UV index in Brill?
What is the UV index intensity in December in Brill?
Average temperature in December
Brill, WI
- Average high temperature in December: 23.5°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (17.6°F).
- Average low temperature in December: 12.9°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (5°F).
Average pressure in December
Brill, WI
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Brill, WI
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in December
Brill, WI
- Average humidity in December: 91%
The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is May (76%).
Average rainfall in December
Brill, WI
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is June (3.5").
The driest month (with the least rainfall) is January (0.79").
Average rainfall days in December
Brill, WI
- Average rainfall days in December: 4 days
The month with the highest number of rainy days is June (18.2 days).
The month with the least rainy days is February (2.5 days).
Average snowfall in December
Brill, WI
- Average snowfall in December: 5.2"
The month with the highest snowfall is February (5.59").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Brill, WI
- Average snowfall days in December: 15.7 days
The month with the highest number of snowfall days is January (18.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Brill, WI
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 2h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in December
Brill, WI
- Average sunshine days in December: 14.4 days
The month with the most sunshine days is September (15.4 days).
The month with the least sunshine days is June (9.7 days).
Average UV index in December
Brill, WI
- Average UV index in December: 1
The months with the highest UV index are May, June and July (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in December
Brill, WI
- Average cloud cover in December: 73
The months with the most cloud cover are January and February (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in December
Brill, WI
- Average visibility in December: 4mi
The months with the highest visibility are May and June (6mi).
The months with the lowest visibility are January, February and December (4mi).
Brill, Wisconsin, USA
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