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
Jefferson's January weather, with an average high temperature of 50.2°F (10.1°C) and an average low temperature of 35.2°F (1.8°C), tends to be the coldest of the year.Humidity
January, March, July and November, with an average relative humidity of 71%, are the least humid months in Jefferson.Rainfall
In January, in Jefferson, the rain falls for 11.8 days. Throughout January, 2.36" (60mm) of precipitation is accumulated. In Jefferson, during the entire year, the rain falls for 166.4 days and collects up to 33.7" (856mm) of precipitation.Snowfall
Months with snowfall in Jefferson are January through March, November and December. In January, in Jefferson, it is snowing for 1.2 days. Throughout January, 0.87" (22mm) of snow is accumulated. In Jefferson, South Carolina, during the entire year, snow falls for 3.8 days and aggregates up to 2.8" (71mm) of snow.Daylight
In Jefferson, the average length of the day in January is 10h and 9min.On the first day of January, sunrise is at 7:28 am and sunset at 5:21 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 5:49 pm EST.
Sunshine
In January, the average sunshine is 5.6h.UV index
January is the month with the lowest UV index in Jefferson, South Carolina, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 2 during January translates into the following directions:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months in Jefferson?
What is the usual temperature for Jefferson in January?
What is the least humid month in Jefferson?
What is the average humidity in January in Jefferson?
How many days does it rain in January in Jefferson?
How many days does it snow in January in Jefferson?
What is the average length of the day in January in Jefferson?
What time are sunrise and sunset in January in Jefferson?
How long on average sun shines in January in Jefferson?
What is the month with the lowest UV index in Jefferson?
What is the UV index reading in January in Jefferson?
Average temperature in January
Jefferson, SC
- Average high temperature in January: 50.2°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 (50.2°F).
- Average low temperature in January: 35.2°F
The month with the highest average low temperature is July (72°F).
The coldest month (with the lowest average low temperature) is January (35.2°F).
Average pressure in January
Jefferson, SC
- Average pressure in January: 30.14"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in January
Jefferson, SC
- Average wind speed in January: 7.5mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in January
Jefferson, SC
- Average humidity in January: 71%
The months with the highest relative humidity are May and December (75%).
The months with the lowest relative humidity are January, March, July and November (71%).
Average rainfall in January
Jefferson, SC
- Average rainfall in January: 2.36"
The wettest month (with the highest rainfall) is August (3.54").
The driest month (with the least rainfall) is October (2.17").
Average rainfall days in January
Jefferson, SC
- Average rainfall days in January: 11.8 days
The month with the highest number of rainy days is July (19 days).
The month with the least rainy days is October (9.5 days).
Average snowfall in January
Jefferson, SC
- Average snowfall in January: 0.87"
The month with the highest snowfall is February (1.34").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Jefferson, SC
- Average snowfall days in January: 1.2 days
The month with the highest number of snowfall days is February (1.4 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Jefferson, SC
- 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 54min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in January
Jefferson, SC
- Average sunshine days in January: 17.6 days
The month with the most sunshine days is October (20.4 days).
The month with the least sunshine days is July (9.7 days).
Average UV index in January
Jefferson, SC
- Average UV index in January: 2
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in January
Jefferson, SC
- Average cloud cover in January: 38
The months with the most cloud cover are February, March and December (Cloud cover 41).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in January
Jefferson, SC
- 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, South Carolina, USA
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