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 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 is the coldest month, exhibiting average temperatures of 56.8°F (13.8°C) at the peak and 42.8°F (6°C) at the base.Humidity
In January, the average relative humidity is 73%.Rainfall
January is the month with the least rainfall. Rain falls for 8.8 days and accumulates 0.67" (17mm) of precipitation.Snowfall
January, February and December are months with snowfall. In January, snow falls for 0.1 days. In Charleston Heights, during the entire year, snow falls for 0.5 days.Daylight
In Charleston Heights, the average length of the day in January is 10h and 17min.On the first day of the month, sunrise is at 7:22 am and sunset at 5:24 pm. On the last day of January, sunrise is at 7:15 am and sunset at 5:50 pm EST.
Sunshine
In Charleston Heights, South Carolina, the average sunshine in January is 5.8h.UV index
January is the month with the lowest UV index, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In January, a daily UV index of 3 turns into the following recommendations:
Take precautions - Protection against sun damage is advised. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
What is the average January temperature?
What is the average humidity in January?
What is the driest month?
How many days does it rain in January in Charleston Heights?
How many days does it snow in January?
What is the average length of the day in January?
When are sunrise and sunset in January?
How many hours of sunshine does Charleston Heights have in January?
What is the month with the lowest UV index in Charleston Heights?
How high is the UV index in January?
Average temperature in January
Charleston Heights, SC
- Average high temperature in January: 56.8°F
The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (56.8°F).
- Average low temperature in January: 42.8°F
The month with the highest average low temperature is July (76.5°F).
The coldest month (with the lowest average low temperature) is January (42.8°F).
Average pressure in January
Charleston Heights, SC
- Average pressure in January: 30.14"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in January
Charleston Heights, SC
- Average wind speed in January: 7.8mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in January
Charleston Heights, SC
- Average humidity in January: 73%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is March (72%).
Average rainfall in January
Charleston Heights, SC
- Average rainfall in January: 0.67"
The wettest month (with the highest rainfall) is August (4.29").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in January
Charleston Heights, SC
- Average rainfall days in January: 8.8 days
The month with the highest number of rainy days is August (22.7 days).
The month with the least rainy days is November (6.9 days).
Average snowfall days in January
Charleston Heights, SC
- Average snowfall days in January: 0.1 days
The month with the highest number of snowfall days is December (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in January /
Average sunshine in January
Charleston Heights, SC
- Average daylight in January: 10h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January: 5h and 5min
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 36min).
Average sunshine days in January
Charleston Heights, SC
- Average sunshine days in January: 20.1 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is August (6.1 days).
Average UV index in January
Charleston Heights, SC
- Average UV index in January: 3
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in January
Charleston Heights, SC
- Average cloud cover in January: 35
The month with the most cloud cover is December (Cloud cover 40).
The months with the least cloud cover are June and July (Cloud cover 26).
Average visibility in January
Charleston Heights, 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).
Charleston Heights, South Carolina, USA
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