Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
As Keystone welcomes August, the average high-temperature stabilizes at a still warm 82°F (27.8°C), showing little deviation from July's 83.5°F (28.6°C). Keystone's average low-temperature for the month of August denotes a significant decline from the daily high, recording at a refreshing 58.5°F (14.7°C).Heat index
August's heat index is estimated at a tropical 87.8°F (31°C). If one endures exposure and continues to be active, it might result in tiredness and heat cramps.For clarity, heat index numbers account for light winds and areas under shade. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', comes about by integrating the temperature readings with the humidity levels. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
Humidity
The months with the lowest humidity are July, August and November, with an average relative humidity of 76%.Rainfall
In Keystone, during August, the rain falls for 16.1 days and regularly aggregates up to 2.28" (58mm) of precipitation. Throughout the year, there are 172.5 rainfall days, and 29.41" (747mm) of precipitation is accumulated.Snowfall
In Keystone, snow does not fall in June through September.Daylight
In August, the average length of the day is 13h and 34min.On the first day of the month, sunrise is at 6:30 am and sunset at 8:33 pm. On the last day of August, sunrise is at 6:56 am and sunset at 7:55 pm EDT.
Sunshine
The month with the most sunshine is August, with an average of 10.1h of sunshine.UV index
The months with the highest UV index are June and August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.Note: A maximum high daily UV index of 6 during August translates into the following directions:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in August?
What is the least humid month?
What is the average humidity in August?
How much does it rain in August?
When it does not snow?
What is the average length of the day in August?
When are sunrise and sunset in August?
What month has the most sunshine?
How many hours of sunshine does Keystone have in August?
What is the month with the highest UV index?
How high is the UV index in August?
Average temperature in August
Keystone, WV
- Average high temperature in August: 82°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 August: 58.5°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 August
Keystone, WV
- Average pressure in August: 30.03"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 August
Keystone, WV
- Average wind speed in August: 4.2mph
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 August
Keystone, WV
- Average humidity in August: 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 August
Keystone, WV
- Average rainfall in August: 2.28"
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 August
Keystone, WV
- Average rainfall days in August: 16.1 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 August
Keystone, WV
- Average snowfall in August: 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 August
Keystone, WV
- Average snowfall days in August: 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 August /
Average sunshine in August
Keystone, WV
- Average daylight in August: 13h and 4min
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 August: 10h and 1min
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 August
Keystone, WV
- Average sunshine days in August: 12.2 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 August
Keystone, WV
- Average UV index in August: 6
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 August
Keystone, WV
- Average cloud cover in August: 36
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 August
Keystone, WV
- Average visibility in August: 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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