July weather forecast
Charleston, WV

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The calm Kanawha River in front of Charleston, West Virginia, reflecting the city in its water
The calm Kanawha River in front of Charleston, West Virginia, reflecting the city in its water

Weather in July

July stands as the warmest month in Charleston with an average high temperature reaching up to 85.6°F (29.8°C), presenting locals with the peak of summer. Despite the high temperatures, the city manages to maintain relative comfort with breezy conditions and occasional rainfall. West Virginia's capital city experiences long sunny days, matched with abundant daylight hours. With mid-summer in full swing, July is warm, sunny, and delightfully vibrant.

Temperature

July is the warmest month, exhibiting average temperatures of 85.6°F (29.8°C) at the peak and 63.3°F (17.4°C) at the base.

Heat index

The heat index for July is calculated to be a fiery hot 96.8°F (36°C). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', shows a temperature sensation when both heat and moisture conditions are combined. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

June through August and November, with an average relative humidity of 76%, are the least humid months.

Rainfall

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

June through September are months without snowfall.

Daylight

In Charleston, the average length of the day in July is 14h and 32min.
On the first day of the month, sunrise is at 6:06 am and sunset at 8:54 pm. On the last day of July, sunrise is at 6:28 am and sunset at 8:37 pm EDT.

Sunshine

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

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 6 in July interprets into the following advice:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Updated: Jul 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the hottest?

Charleston's warmest weather arrives in July, when temperatures average a high of 85.6°F (29.8°C) and a low of 63.3°F (17.4°C).

Is it hot during July?

Charleston in July has an average high-temperature of 85.6°F (29.8°C) and an average low-temperature of 63.3°F (17.4°C). In July, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines air temperature and relative humidity, is calculated to be 96.8°F (36°C).

What are the least humid months?

June through August and November, with an average relative humidity of 76%, are the least humid months in Charleston.

What is the average humidity in July?

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

How much does it rain in July?

In Charleston, 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?

In Charleston, snow does not fall in June through September.

What is the average length of the day in July?

In July, the average day length is 14h and 32min.

What time are sunrise and sunset in July?

On the first day of July in Charleston, sunrise is at 6:06 am and sunset at 8:54 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 8:37 pm EDT.

How long on average sun shines in July?

In July, the average sunshine duration is 9.8h.

What are the months with the highest UV index?

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

What is the UV index intensity in July?

In July, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Charleston, WV

Average temperature in July - Charleston, WV
  • Average high temperature in July: 85.6°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (38.7°F).

  • Average low temperature in July: 63.3°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (25.3°F).

Average pressure in July
Charleston, WV

Average pressure in July - Charleston, WV
  • Average pressure in July: 30.01"Hg

The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

Average wind speed in July
Charleston, WV

Average wind speed in July - Charleston, WV
  • Average wind speed in July: 4.3mph

The windiest month (with the highest average wind speed) is February (6.6mph).
The calmest month (with the lowest average wind speed) is August (4mph).

Average humidity in July
Charleston, WV

Average humidity in July - Charleston, WV
  • Average humidity in July: 76%

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

Average rainfall in July
Charleston, WV

Average rainfall in July - Charleston, WV
  • Average rainfall in July: 2.76"

The wettest month (with the highest rainfall) is May (3.94").
The driest month (with the least rainfall) is September (1.81").

Average rainfall days in July
Charleston, WV

Average rainfall days in July - Charleston, WV
  • 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, WV

Average snowfall in July - Charleston, WV
  • Average snowfall in July: 0"

The month with the highest snowfall is January (5.51").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in July
Charleston, WV

Average snowfall days in July - Charleston, WV
  • Average snowfall days in July: 0 days

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

Average daylight in July /
Average sunshine in July
Charleston, WV

Average daylight in July / Average sunshine in July - Charleston, WV
  • Average daylight in July: 14h and 3min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in July: 9h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days in July
Charleston, WV

Average sunshine days in July - Charleston, WV
  • Average sunshine days in July: 11.3 days

The months with the most sunshine days are October and November (16.5 days).
The month with the least sunshine days is February (8.4 days).

Average UV index in July
Charleston, WV

Average UV index in July - Charleston, WV
  • Average UV index in July: 6

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

Average cloud cover in July
Charleston, WV

Average cloud cover in July - Charleston, WV
  • Average cloud cover in July: 37

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 33).

Average visibility in July
Charleston, WV

Average visibility in July - Charleston, WV
  • Average visibility in July: 5mi

The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).

Charleston, West Virginia, USA

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