Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average snowfall in July
- Average snowfall days in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
Weather in July
Temperature
July brings the highest temperatures, with an average high of 83.5°F (28.6°C) and an average low of 60.3°F (15.7°C).Heat index
For July, the heat index is appraised at a hot 91.4°F (33°C). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.Note that heat index values are valued for light wind and location in the shade. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
Humidity
July, August and November, with an average relative humidity of 76%, are the least humid months.Rainfall
In Keystone, during July, the rain falls for 19.1 days and regularly aggregates up to 2.6" (66mm) of precipitation. Throughout the year, in Keystone, there are 172.5 rainfall days, and 29.41" (747mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Keystone.Daylight
In Keystone, the average length of the day in July is 14h and 26min.On the first day of July in Keystone, West Virginia, sunrise is at 6:09 am and sunset at 8:50 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 8:34 pm EDT.
Sunshine
The average sunshine in July in Keystone is 10h.UV index
In Keystone, the average daily maximum UV index in July is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 5 in July interprets into the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Frequently asked questions
What time of the year is the hottest in Keystone?
How hot is July in Keystone?
What is the least humid month in Keystone?
What is the average humidity in July in Keystone?
How many days does it rain in July in Keystone?
When it does not snow in Keystone?
How many hours of daylight does Keystone have in July?
When are sunrise and sunset in July in Keystone?
How many hours of sunshine does Keystone have in July?
How high is the UV index in July in Keystone?
Average temperature in July
Keystone, WV
- Average high temperature in July: 83.5°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (39.2°F).
- Average low temperature in July: 60.3°F
The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (25°F).
Average pressure in July
Keystone, WV
- Average pressure in July: 30.02"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in July
Keystone, WV
- Average wind speed in July: 4.6mph
The windiest month (with the highest average wind speed) is January (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in July
Keystone, WV
- Average humidity in July: 76%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are July, August and November (76%).
Average rainfall in July
Keystone, WV
- Average rainfall in July: 2.6"
The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days in July
Keystone, WV
- Average rainfall days in July: 19.1 days
The month with the highest number of rainy days is May (19.7 days).
The months with the least rainy days are January and November (10.1 days).
Average snowfall in July
Keystone, WV
- Average snowfall in July: 0"
The month with the highest snowfall is December (4.41").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in July
Keystone, WV
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (10.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Keystone, WV
- Average daylight in July: 14h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in July: 10h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in July
Keystone, WV
- Average sunshine days in July: 9.6 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is May (9.2 days).
Average UV index in July
Keystone, WV
- Average UV index in July: 5
The months with the highest UV index are June 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
Keystone, WV
- Average cloud cover in July: 37
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are June and August (Cloud cover 36).
Average visibility in July
Keystone, 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).
Keystone, West Virginia, USA
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