Charleston
West Virginia, USA
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
Charleston, West VA

January, the same as December, is a wintry winter month in Charleston, West Virginia, with average temperature fluctuating between 25.3°F (-3.7°C) and 38.7°F (3.7°C).

Temperature

The coldest month is January, with an average high-temperature of 38.7°F (3.7°C) and an average low-temperature of 25.3°F (-3.7°C).

Humidity

Months with the highest humidity in Charleston are January and February, with an average relative humidity of 82%.

Rainfall

In Charleston, during January, the rain falls for 11.8 days and regularly aggregates up to 2.68" (68mm) of precipitation. In Charleston, during the entire year, the rain falls for 180.4 days and collects up to 34.06" (865mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. January is the month with the most snowfall in Charleston. Snow falls for 14.1 days and accumulates 5.51" (140mm) of snow.

Daylight

In January, the average length of the day is 9.9h.

Sunshine

The month with the least sunshine is January, with an average of 3.7h of sunshine.

UV index

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Charleston. A UV Index value of 2, and less, symbolizes a low health risk from the exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 2 transform into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the coldest month in Charleston?

January is the coldest month in Charleston, with an average high-temperature of 38.7°F (3.7°C) and an average low-temperature of 25.3°F (-3.7°C).

What is the temperature in January in Charleston?

In Charleston, in January, the average high-temperature is 38.7°F (3.7°C), and the average low-temperature is 25.3°F (-3.7°C).

What is the most humid month in Charleston?

Months with the highest humidity are January and February, with an average relative humidity of 82%.

What is the average humidity in January in Charleston?

The average relative humidity in January in Charleston is 82%.

How many days does it rain in January in Charleston?

In January, in Charleston, the rain falls for 11.8 days. Throughout January, 2.68" (68mm) of precipitation is accumulated.

How many days does it snow in January in Charleston?

In Charleston, during January, snow falls for 14.1 days and regularly aggregates up to 5.51" (140mm) of snow.

When does it snow the most in Charleston?

The month with the most snowfall in Charleston is January when snow falls for 14.1 days and typically aggregates up to 5.51" (140mm) of snow.

What is the average length of the day in January in Charleston?

In Charleston, the average length of the day in January is 9.9h.

What is the month with the least sunshine in Charleston?

January has the least sunshine of the year, with an average of 3.7h of sunshine.

How long on average sun shines in January in Charleston?

The average sunshine in January is 3.7h.

When is the lowest UV index in Charleston?

Months with the lowest UV index in Charleston are January, February and December, with an average maximum UV index of 2.

What is the UV index reading in January in Charleston?

In January, the average daily maximum UV index in Charleston is 2. A UV Index value of 2, and less, symbolizes a low health threat from unprotected exposure to the UV radiation.
Average temperature in January - Charleston, West VA
  • Average high temperature in January: 3.7°C

The warmest month (with the highest average high temperature) is July (29.8°C).
The month with the lowest average high temperature is January (3.7°C).

  • Average low temperature in January: -3.7°C

The month with the highest average low temperature is July (17.4°C).
The coldest month (with the lowest average low temperature) is January (-3.7°C).

Average humidity in January - Charleston, West VA
  • Average humidity in January: 82%

Months with the highest relative humidity are January and February (82%).
Months with the lowest relative humidity are June, July, August and November (76%).

Average rainfall in January - Charleston, West VA
  • Average rainfall in January: 68mm

The wettest month (with the highest rainfall) is May (100mm).
The driest month (with the least rainfall) is September (46mm).

Average rainfall days in January - Charleston, West VA
  • Average rainfall days in January: 11.8 days

The month with the highest number of rainy days is May (20.1 days).
The month with the least rainy days is November (11 days).

Average snowfall in January - Charleston, West VA
  • Average snowfall in January: 140mm

The month with the highest snowfall is January (140mm).
Months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in January - Charleston, West VA
  • Average snowfall days in January: 14.1 days

The month with the highest number of snowfall days is January (14.1 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in January / Average sunshine in January - Charleston, West VA
  • Average daylight in January: 9.9h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in January: 3.7h

The month with the most sunshine is August (Average sunshine: 10.2h).
The month with the least sunshine is January (Average sunshine: 3.7h).

Average UV index in January - Charleston, West VA
  • Average UV index in January: 2

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February and December (UV index 2).