Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
January brings the lowest temperatures, with an average high of 49.8°F (9.9°C) and an average low of 34.3°F (1.3°C).Humidity
In Jefferson, the average relative humidity in January is 74%.Rainfall
In January, the rain falls for 12.5 days. Throughout January, 3.15" (80mm) of precipitation is accumulated. In Jefferson, during the entire year, the rain falls for 176 days and collects up to 40.12" (1019mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In Jefferson, in January, during 1.1 snowfall days, 0.47" (12mm) of snow is typically accumulated. Throughout the year, there are 3.3 snowfall days, and 1.69" (43mm) of snow is accumulated.Daylight
The average length of the day in January is 10h and 11min.On the first day of the month, sunrise is at 7:39 am and sunset at 5:35 pm. On the last day of January, in Jefferson, sunrise is at 7:32 am and sunset at 6:03 pm EST.
Sunshine
The average sunshine in January is 5.7h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: In January, the maximum UV index of 2 suggests these recommendations:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
What are January temperatures?
What is the average humidity in January?
How many days does it rain in January?
How much does it snow in January?
What is the average length of the day in January?
What time are sunrise and sunset in January?
How many hours of sunshine does Jefferson have in January?
When is the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Jefferson, GA
- Average high temperature in January: 49.8°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 January: 34.3°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 January
Jefferson, GA
- Average pressure in January: 30.15"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 January
Jefferson, GA
- Average wind speed in January: 7.4mph
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 January
Jefferson, GA
- Average humidity in January: 74%
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 January
Jefferson, GA
- Average rainfall in January: 3.15"
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 January
Jefferson, GA
- Average rainfall days in January: 12.5 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 January
Jefferson, GA
- Average snowfall in January: 0.47"
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 January
Jefferson, GA
- Average snowfall days in January: 1.1 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 January /
Average sunshine in January
Jefferson, GA
- Average daylight in January: 10h and 1min
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 January: 5h and 4min
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 January
Jefferson, GA
- Average sunshine days in January: 16.7 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 January
Jefferson, GA
- Average UV index in January: 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 January
Jefferson, GA
- Average cloud cover in January: 40
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 January
Jefferson, GA
- Average visibility in January: 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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