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
The advent of August brings an average high-temperature of a moderately hot 85.5°F (29.7°C), exhibiting minor difference from the previous month. In Castleton, the expected average low-temperature for August is a comfortable 64.6°F (18.1°C).Heat index
For most parts of August, the heat index is computed to be a sweltering 95°F (35°C). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.Given the heat index, its values are aligned with shaded sites and gentle winds. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', arises from combining readings of air temperature and relative moisture content. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. As body temperatures escalate without effective heat release, one might face dehydration threats.
Humidity
In August, the average relative humidity is 73%.Rainfall
In August, the rain falls for 14.6 days. Throughout August, 2.36" (60mm) of precipitation is accumulated. In Castleton, during the entire year, the rain falls for 144.4 days and collects up to 25.08" (637mm) of precipitation.Snowfall
June through October are months without snowfall.Daylight
In Castleton, the average length of the day in August is 13h and 37min.On the first day of August, sunrise is at 6:14 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 6:41 am and sunset at 7:43 pm EDT.
Sunshine
In August, the average sunshine is 10.1h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the average person.Note: A maximum daily UV index of 6 during August morphs into the following directions:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is August?
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?
How long on average sun shines in August?
What are the months with the highest UV index?
What is the UV index intensity in August?
Average temperature in August
Castleton, VA
- Average high temperature in August: 85.5°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (41.4°F).
- Average low temperature in August: 64.6°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in August
Castleton, VA
- Average pressure in August: 30"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in August
Castleton, VA
- Average wind speed in August: 4.6mph
The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in August
Castleton, VA
- Average humidity in August: 73%
The months with the highest relative humidity are October and December (77%).
The month with the lowest relative humidity is July (72%).
Average rainfall in August
Castleton, VA
- Average rainfall in August: 2.36"
The wettest month (with the highest rainfall) is May (2.68").
The driest month (with the least rainfall) is February (1.46").
Average rainfall days in August
Castleton, VA
- Average rainfall days in August: 14.6 days
The month with the highest number of rainy days is May (16.1 days).
The months with the least rainy days are January and November (8.3 days).
Average snowfall in August
Castleton, VA
- Average snowfall in August: 0"
The month with the highest snowfall is January (2.36").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in August
Castleton, VA
- Average snowfall days in August: 0 days
The months with the highest number of snowfall days are January and February (4.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in August /
Average sunshine in August
Castleton, VA
- Average daylight in August: 13h and 4min
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 August: 10h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in August
Castleton, VA
- Average sunshine days in August: 14.3 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is May (12.5 days).
Average UV index in August
Castleton, VA
- Average UV index in August: 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, November and December (UV index 2).
Average cloud cover in August
Castleton, VA
- Average cloud cover in August: 34
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in August
Castleton, VA
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
Castleton, Virginia, USA
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