August weather forecastRoberts Mill, VA
August
Weather in August
The last month of the summer, August, is another warm month in Roberts Mill, Virginia, with temperature in the range of an average low of 55.9°F (13.3°C) and an average high of 79.5°F (26.4°C).Temperature
Roberts Mill marks the onset of August with an average high-temperature of a still moderately hot 79.5°F (26.4°C), subtly divergent from July's 81°F (27.2°C). Roberts Mill's nights during August are marked by a pronounced drop from daytime temperatures, experiencing an average low of 55.9°F (13.3°C).Humidity
The average relative humidity in August is 78%.Rainfall
In August, the rain falls for 18.9 days. Throughout August, 2.52" (64mm) of precipitation is accumulated. Throughout the year, there are 191 rainfall days, and 30.87" (784mm) of precipitation is accumulated.Snowfall
In Roberts Mill, snow does not fall in June through September.Daylight
In August, the average length of the day is 13h and 31min.On the first day of August, sunrise is at 6:32 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 7:55 pm EDT.
Sunshine
The average sunshine in August is 9.8h.UV index
August is the month with the highest UV index, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the average person.Note: The maximum UV index, 6 during August, leads to the following recommendations:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Roberts Mill, VA
- Average high temperature in August: 79.5°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in August: 55.9°F
The month with the highest average low temperature is July (57.9°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).
Average pressure in August
Roberts Mill, VA
- 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
Roberts Mill, VA
- Average wind speed in August: 4.3mph
The windiest months (with the highest average wind speed) are January and February (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in August
Roberts Mill, VA
- Average humidity in August: 78%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is November (77%).
Average rainfall in August
Roberts Mill, VA
- Average rainfall in August: 2.52"
The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in August
Roberts Mill, VA
- Average rainfall days in August: 18.9 days
The month with the highest number of rainy days is July (22 days).
The month with the least rainy days is November (10.8 days).
Average snowfall in August
Roberts Mill, VA
- Average snowfall in August: 0"
The month with the highest snowfall is December (4.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Roberts Mill, VA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Roberts Mill, VA
- Average daylight in August: 13h and 30min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in August: 9h and 48min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in August
Roberts Mill, VA
- Average sunshine days in August: 9 days
The month with the most sunshine days is November (15.6 days).
The month with the least sunshine days is May (6.7 days).
Average UV index in August
Roberts Mill, VA
- Average UV index in August: 6
The month with the highest UV index is 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
Roberts Mill, VA
- Average cloud cover in August: 40
The month with the most cloud cover is February (Cloud cover 59).
The months with the least cloud cover are June, July and August (Cloud cover 40).
Average visibility in August
Roberts Mill, VA
- Average visibility in August: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (5mi).
The month with the lowest visibility is September (4mi).





