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

July weather forecast and climate
Charleston, West VA

July, like June, in Charleston, West Virginia, is another warm summer month, with average temperature varying between 63.3°F (17.4°C) and 85.6°F (29.8°C).

Temperature

With an average high-temperature of 85.6°F (29.8°C) and an average low-temperature of 63.3°F (17.4°C), July is the warmest month.

Heat index

In July, the average heat index is calculated to a torrid 96.8°F (36°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'felt air temperature', 'real feel', or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like activity, pregnancy, clothing, and differences in body mass, height, and shape affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

Months with the lowest humidity in Charleston are June through August and November, with an average relative humidity of 76%.

Rainfall

In Charleston, West Virginia, during 18 rainfall days, 2.76" (70mm) of precipitation is typically accumulated. In Charleston, West Virginia, during the entire year, the rain falls for 180.4 days and collects up to 34.06" (865mm) of precipitation.

Snowfall

June through September are months without snowfall in Charleston.

Daylight

In Charleston, West Virginia, the average length of the day in July is 14.5h.

Sunshine

In July, the average sunshine is 9.8h.

UV index

Months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 6 interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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.

What is the warmest month in Charleston?

July is the warmest month in Charleston, with an average high-temperature of 85.6°F (29.8°C) and an average low-temperature of 63.3°F (17.4°C).

What is the temperature in July in Charleston?

In Charleston, West Virginia, in July, the average high-temperature is 85.6°F (29.8°C), and the average low-temperature is 63.3°F (17.4°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), that combines relative humidity and air temperature, in July is evaluated at 96.8°F (36°C).

What are the least humid months in Charleston?

Months with the lowest humidity in Charleston, West Virginia, are June through August and November, with an average relative humidity of 76%.

What is the average humidity in July in Charleston?

In Charleston, the average relative humidity in July is 76%.

How many days does it rain in July in Charleston?

In Charleston, West Virginia, during July, the rain falls for 18 days and regularly aggregates up to 2.76" (70mm) of precipitation.

When it does not snow in Charleston?

June through September are months without snowfall in Charleston, West Virginia.

How many hours of daylight does Charleston have in July?

The average length of the day in July in Charleston, West Virginia, is 14.5h.

How long on average sun shines in July in Charleston?

In July, the average sunshine in Charleston is 9.8h.

What is the month with the highest UV index in Charleston?

Months with the highest UV index in Charleston are May through August, with an average maximum UV index of 6.

What is the UV index reading in July in Charleston?

In July, the average daily maximum UV index in Charleston is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from unprotected exposure to the UV radiation.
Average temperature in July - Charleston, West VA
  • Average high temperature in July: 29.8°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 July: 17.4°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 July - Charleston, West VA
  • Average humidity in July: 76%

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 July - Charleston, West VA
  • Average rainfall in July: 70mm

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

Average rainfall days in July - Charleston, West VA
  • Average rainfall days in July: 18 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 July - Charleston, West VA
  • Average snowfall in July: 0mm

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 July - Charleston, West VA
  • Average snowfall days in July: 0 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 July / Average sunshine in July - Charleston, West VA
  • Average daylight in July: 14.5h

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 July: 9.8h

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 July - Charleston, West VA
  • Average UV index in July: 6

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).