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
The arrival of December suggests a slight decrease in the average high-temperature, moving from an enjoyable 60.8°F (16°C) in November to a fresh 53.4°F (11.9°C). Jefferson observes an average nighttime temperature of 39°F (3.9°C) during December.Humidity
With an average relative humidity of 78%, December is the most humid month in Jefferson.Rainfall
In Jefferson, in December, during 13 rainfall days, 3.94" (100mm) of precipitation is typically accumulated. Throughout the year, there are 176 rainfall days, and 40.12" (1019mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall. In Jefferson, in December, snow falls for 0.5 days, with typically accumulated 0.16" (4mm) of snow. Throughout the year, there are 3.3 snowfall days, and 1.69" (43mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 54min of daylight.On the first day of the month, sunrise is at 7:22 am and sunset at 5:24 pm. On the last day of December, sunrise is at 7:39 am and sunset at 5:35 pm EST.
Sunshine
The month with the least sunshine is December, with an average of 5.1h of sunshine.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: An average UV index of 2 in December transforms into this advice:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature?
What is the most humid month?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Jefferson have in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Jefferson, GA
- Average high temperature in December: 53.4°F
The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (49.8°F).
- Average low temperature in December: 39°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (34.3°F).
Average pressure in December
Jefferson, GA
- Average pressure in December: 30.14"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in December
Jefferson, GA
- Average wind speed in December: 6.7mph
The windiest month (with the highest average wind speed) is January (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in December
Jefferson, GA
- Average humidity in December: 78%
The month with the highest relative humidity is December (78%).
The months with the lowest relative humidity are July and October (72%).
Average rainfall in December
Jefferson, GA
- Average rainfall in December: 3.94"
The wettest month (with the highest rainfall) is August (4.29").
The driest month (with the least rainfall) is September (2.28").
Average rainfall days in December
Jefferson, GA
- Average rainfall days in December: 13 days
The month with the highest number of rainy days is July (20 days).
The month with the least rainy days is October (9.8 days).
Average snowfall in December
Jefferson, GA
- Average snowfall in December: 0.16"
The month with the highest snowfall is February (0.94").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Jefferson, GA
- Average snowfall days in December: 0.5 days
The month with the highest number of snowfall days is February (1.2 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
Jefferson, 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 month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in December
Jefferson, GA
- Average sunshine days in December: 16.8 days
The month with the most sunshine days is October (20.2 days).
The month with the least sunshine days is July (8.1 days).
Average UV index in December
Jefferson, GA
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Jefferson, GA
- Average cloud cover in December: 44
The months with the most cloud cover are February and December (Cloud cover 44).
The month with the least cloud cover is June (Cloud cover 29).
Average visibility in December
Jefferson, 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).
Jefferson, Georgia, USA
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