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
In Charleston, the lowest average temperatures are observed in January, with a high of 28.6°F (-1.9°C) and a low of 17.1°F (-8.3°C).Humidity
The average relative humidity in January in Charleston is 84%.Rainfall
In Charleston, during January, the rain falls for 9.7 days and regularly aggregates up to 2.13" (54mm) of precipitation. In Charleston, during the entire year, the rain falls for 175.2 days and collects up to 30.39" (772mm) of precipitation.Snowfall
Months with snowfall in Charleston, Pennsylvania, are January through May, October through December. In January, it is snowing for 18.7 days. Throughout January, 7.48" (190mm) of snow is accumulated. Throughout the year, in Charleston, there are 80.1 snowfall days, and 36.85" (936mm) of snow is accumulated.Daylight
In Charleston, the average length of the day in January is 9h and 34min.On the first day of the month, sunrise is at 7:36 am and sunset at 4:48 pm. On the last day of January, sunrise is at 7:22 am and sunset at 5:22 pm EST.
Sunshine
The average sunshine in January in Charleston is 3.2h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for average individuals.Note: A maximum UV index of 1 in January translates into the following recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Frequently asked questions
What is the coldest time of year in Charleston?
How cold is January in Charleston?
What is the average humidity in January in Charleston?
How much does it rain in Charleston in January?
How much does it snow in Charleston in January?
What is the average length of the day in January in Charleston?
When are sunrise and sunset in January in Charleston?
How long on average sun shines in January in Charleston?
When is the lowest UV index in Charleston?
How high is the UV index in January in Charleston?
Average temperature in January
Charleston, PA
- Average high temperature in January: 28.6°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (28.6°F).
- Average low temperature in January: 17.1°F
The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in January
Charleston, PA
- Average pressure in January: 30.08"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in January
Charleston, PA
- Average wind speed in January: 8.8mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in January
Charleston, PA
- Average humidity in January: 84%
The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is June (78%).
Average rainfall in January
Charleston, PA
- Average rainfall in January: 2.13"
The wettest month (with the highest rainfall) is April (3.35").
The driest month (with the least rainfall) is November (1.97").
Average rainfall days in January
Charleston, PA
- Average rainfall days in January: 9.7 days
The month with the highest number of rainy days is July (19.4 days).
The month with the least rainy days is February (8.5 days).
Average snowfall in January
Charleston, PA
- Average snowfall in January: 7.48"
The month with the highest snowfall is February (9.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Charleston, PA
- Average snowfall days in January: 18.7 days
The month with the highest number of snowfall days is January (18.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Charleston, PA
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January: 3h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 3h and 6min).
Average sunshine days in January
Charleston, PA
- Average sunshine days in January: 8.1 days
The month with the most sunshine days is September (14 days).
The month with the least sunshine days is February (7.4 days).
Average UV index in January
Charleston, PA
- Average UV index in January: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in January
Charleston, PA
- Average cloud cover in January: 68
The month with the most cloud cover is December (Cloud cover 69).
The months with the least cloud cover are July and August (Cloud cover 39).
Average visibility in January
Charleston, PA
- Average visibility in January: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).
Charleston, Pennsylvania, USA
Weather forecast for your location
2. Allow the app to use your location
