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 transition into August shows a subtle variation to a still warm 81°F (27.2°C) from July's 82°F (27.8°C) in the average high-temperature. Maintaining close parity with daytime warmth, the average nocturnal temperature during August stays at a still warm 75°F (23.9°C).Heat index
In August, the average heat index is computed to be a tropical 86°F (30°C). If exposure and ongoing activity persist, they might induce a state of tiredness and heat cramps.The metrics for the heat index are tailored for both shady environments and light winds. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', reflects the feeling of heat when considering both air temperature and humidity. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Humidity
In August, the average relative humidity is 76%.Rainfall
The month with the most rainfall is August, when the rain falls for 18.3 days and typically aggregates up to 4.29" (109mm) of precipitation.Snowfall
April through November are months without snowfall in Onley.Daylight
In Onley, Virginia, the average length of the day in August is 13h and 34min.On the first day of August, sunrise is at 6:07 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 7:33 pm EDT.
Sunshine
In Onley, the average sunshine in August is 10.7h.UV index
July and August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily maximum UV index of 7 in August interprets into the following advice:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in August?
What is the average humidity in August?
What is the wettest month?
How many days does it rain in August?
When it does not snow?
What is the average length of the day in August?
What time are sunrise and sunset in August?
How many hours of sunshine does Onley have in August?
What is the month with the highest UV index?
What is the UV index reading in August?
Average temperature in August
Onley, VA
- Average high temperature in August: 81°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (43.5°F).
- Average low temperature in August: 75°F
The month with the highest average low temperature is July (75.7°F).
The coldest month (with the lowest average low temperature) is January (35.2°F).
Average pressure in August
Onley, VA
- Average pressure in August: 29.99"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in August
Onley, VA
- Average wind speed in August: 9.2mph
The windiest month (with the highest average wind speed) is January (13.1mph).
The calmest month (with the lowest average wind speed) is August (9.2mph).
Average humidity in August
Onley, VA
- Average humidity in August: 76%
The month with the highest relative humidity is May (80%).
The months with the lowest relative humidity are January and November (74%).
Average rainfall in August
Onley, VA
- Average rainfall in August: 4.29"
The wettest month (with the highest rainfall) is August (4.29").
The driest months (with the least rainfall) are January and November (2.44").
Average rainfall days in August
Onley, VA
- Average rainfall days in August: 18.3 days
The month with the highest number of rainy days is July (19.5 days).
The month with the least rainy days is November (10.9 days).
Average snowfall in August
Onley, VA
- Average snowfall in August: 0"
The month with the highest snowfall is February (0.79").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in August
Onley, VA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (2.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in August /
Average sunshine in August
Onley, VA
- 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 4min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).
Average sunshine days in August
Onley, VA
- Average sunshine days in August: 10.1 days
The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is July (9.4 days).
Average UV index in August
Onley, VA
- Average UV index in August: 7
The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in August
Onley, VA
- Average cloud cover in August: 26
The month with the most cloud cover is March (Cloud cover 44).
The months with the least cloud cover are June, July and August (Cloud cover 26).
Average visibility in August
Onley, VA
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Onley, Virginia, USA
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