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
December brings a slight decrease in temperature, down from a comfortable 61°F (16.1°C) in November to a cool 53.6°F (12°C). Brookhaven's nighttime temperature in December drops to an average of 39.6°F (4.2°C).Humidity
With an average relative humidity of 77%, December is the most humid month.Rainfall
In Brookhaven, in December, during 13.5 rainfall days, 3.86" (98mm) of precipitation is typically accumulated. Throughout the year, there are 187.2 rainfall days, and 44.13" (1121mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall. In Brookhaven, in December, during 0.5 snowfall days, 0.47" (12mm) of snow is typically accumulated. Throughout the year, there are 3.5 snowfall days, and 2.64" (67mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 54min of daylight.On the first day of December, sunrise is at 7:24 am and sunset at 5:28 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 5:39 pm EST.
Sunshine
With an average of 5.1h of sunshine, December has the least sunshine of the year.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for average individuals.Note: In December, the maximum UV index of 2 suggests these recommendations:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in December?
What is the most humid month?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Brookhaven have in December?
What is the month with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Brookhaven, GA
- Average high temperature in December: 53.6°F
The warmest month (with the highest average high temperature) is July (90.7°F).
The month with the lowest average high temperature is January (49.8°F).
- Average low temperature in December: 39.6°F
The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (34.3°F).
Average pressure in December
Brookhaven, GA
- Average pressure in December: 30.15"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in December
Brookhaven, GA
- Average wind speed in December: 7.3mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in December
Brookhaven, GA
- Average humidity in December: 77%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (68%).
Average rainfall in December
Brookhaven, GA
- Average rainfall in December: 3.86"
The wettest month (with the highest rainfall) is August (5.63").
The driest month (with the least rainfall) is October (2.28").
Average rainfall days in December
Brookhaven, GA
- Average rainfall days in December: 13.5 days
The month with the highest number of rainy days is July (21.6 days).
The month with the least rainy days is October (10.4 days).
Average snowfall in December
Brookhaven, GA
- Average snowfall in December: 0.47"
The month with the highest snowfall is January (1.06").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Brookhaven, GA
- Average snowfall days in December: 0.5 days
The month with the highest number of snowfall days is January (1.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Brookhaven, GA
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in December: 5h and 1min
The months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in December
Brookhaven, GA
- Average sunshine days in December: 15.2 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is July (6.9 days).
Average UV index in December
Brookhaven, GA
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Brookhaven, GA
- Average cloud cover in December: 46
The month with the most cloud cover is December (Cloud cover 46).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in December
Brookhaven, GA
- 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).
Brookhaven, Georgia, USA
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