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
Brooklyn in December experiences a subtle temperature decline, with average high-temperatures reducing from an icy 42.6°F (5.9°C) in November to a freezing cold 30.7°F (-0.7°C). In December, Brooklyn reports a consistent average low-temperature of 20.7°F (-6.3°C) during the nights.Humidity
The average relative humidity in December is 84%.Rainfall
The month with the least rainfall is December, when the rain falls for 4.2 days and typically collects 0.31" (8mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Brooklyn, in December, during 8 snowfall days, 0.35" (9mm) of snow is typically accumulated. In Brooklyn, during the entire year, snow falls for 35.7 days and aggregates up to 4.06" (103mm) 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 the month, sunrise is at 7:09 am and sunset at 4:24 pm. On the last day of December, sunrise is at 7:28 am and sunset at 4:33 pm CST.
Sunshine
In December, the average sunshine in Brooklyn 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 low threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The daily high UV index of 1 in December translates into this advice:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
What is the driest month in Brooklyn?
How much does it rain in Brooklyn in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Brooklyn have in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
What is the month with the lowest UV index in Brooklyn?
What is the UV index intensity in December?
Average temperature in December
Brooklyn, WI
- Average high temperature in December: 30.7°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (24.3°F).
- Average low temperature in December: 20.7°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).
Average pressure in December
Brooklyn, 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
Brooklyn, WI
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in December
Brooklyn, WI
- Average humidity in December: 84%
The months with the highest relative humidity are January and February (88%).
The months with the lowest relative humidity are April and October (77%).
Average rainfall in December
Brooklyn, WI
- Average rainfall in December: 0.31"
The wettest month (with the highest rainfall) is June (0.98").
The driest month (with the least rainfall) is December (0.31").
Average rainfall days in December
Brooklyn, WI
- Average rainfall days in December: 4.2 days
The month with the highest number of rainy days is May (12.8 days).
The month with the least rainy days is February (2.2 days).
Average snowfall in December
Brooklyn, WI
- Average snowfall in December: 0.35"
The month with the highest snowfall is January (1.14").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Brooklyn, WI
- Average snowfall days in December: 8 days
The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Brooklyn, WI
- Average daylight in December: 9h and 1min
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: 3h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in December
Brooklyn, WI
- Average sunshine days in December: 22.6 days
The month with the most sunshine days is December (22.6 days).
The month with the least sunshine days is June (14.3 days).
Average UV index in December
Brooklyn, WI
- Average UV index in December: 1
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in December
Brooklyn, WI
- Average cloud cover in December: 62
The month with the most cloud cover is January (Cloud cover 66).
The months with the least cloud cover are July, August and September (Cloud cover 35).
Average visibility in December
Brooklyn, WI
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, July, August and September (5mi).
Brooklyn, Wisconsin, USA
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