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
Brownstown's December weather comes with a decrease in average high-temperatures, moving from a fresh 51.4°F (10.8°C) in November to a wintry 40.6°F (4.8°C). During December, Brownstown records a consistent average nighttime temperature of 29.5°F (-1.4°C).Humidity
In December, the average relative humidity in Brownstown is 78%.Rainfall
In Brownstown, in December, it is raining for 8.9 days, with typically 1.5" (38mm) of accumulated precipitation. In Brownstown, during the entire year, the rain falls for 139.3 days and collects up to 23.94" (608mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Brownstown. The month with the most snowfall is December, when snow falls for 3.5 days and typically aggregates up to 1.65" (42mm) of snow.Daylight
The month with the shortest days in Brownstown is December, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 6:56 am and sunset at 4:33 pm. On the last day of December, sunrise is at 7:14 am and sunset at 4:43 pm CST.
Sunshine
In December, the average sunshine is 4.6h.UV index
The months with the lowest UV index in Brownstown are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: In December, the maximum UV index of 2 translates into these guidelines:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Brownstown in December?
What is the average humidity in December in Brownstown?
How much does it rain in Brownstown in December?
What is the snowiest month in Brownstown?
How many days does it snow in December in Brownstown?
What is the month with the shortest days in Brownstown?
How many hours of daylight does Brownstown have in December?
When is the sunrise / sunset in December in Brownstown?
How many hours of sunshine does Brownstown have in December?
When is the lowest UV index in Brownstown?
What is the UV index reading in December in Brownstown?
Average temperature in December
Brownstown, IL
- Average high temperature in December: 40.6°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (36°F).
- Average low temperature in December: 29.5°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in December
Brownstown, IL
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Brownstown, IL
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in December
Brownstown, IL
- Average humidity in December: 78%
The months with the highest relative humidity are July and August (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Brownstown, IL
- Average rainfall in December: 1.5"
The wettest months (with the highest rainfall) are April and June (2.95").
The driest month (with the least rainfall) is February (1.18").
Average rainfall days in December
Brownstown, IL
- Average rainfall days in December: 8.9 days
The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in December
Brownstown, IL
- Average snowfall in December: 1.65"
The month with the highest snowfall is December (1.65").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Brownstown, IL
- Average snowfall days in December: 3.5 days
The month with the highest number of snowfall days is January (5.7 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
Brownstown, IL
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in December
Brownstown, IL
- Average sunshine days in December: 19.2 days
The months with the most sunshine days are January and November (19.5 days).
The months with the least sunshine days are May and July (12.3 days).
Average UV index in December
Brownstown, IL
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Brownstown, IL
- Average cloud cover in December: 51
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June and July (Cloud cover 29).
Average visibility in December
Brownstown, IL
- 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).
Brownstown, Illinois, USA
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