August weather forecastPiedmont, CA
August
Weather in August
August, the last month of the summer in Piedmont, is another warm month, with an average temperature varying between 75.7°F (24.3°C) and 56.7°F (13.7°C).Temperature
The average high-temperature in August, at a still moderately hot 75.7°F (24.3°C), reveals a modest deviation from July's 75.6°F (24.2°C). Throughout the month of August, Piedmont witnesses an average temperature of 56.7°F (13.7°C).Humidity
In August, the average relative humidity is 70%.Rainfall
The months with the least rainfall are June through September Rain falls for 1.5 days and accumulates 0.08" (2mm) of rain.Daylight
In Piedmont, the average length of the day in August is 13h and 35min.On the first day of August, sunrise is at 6:13 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 7:39 pm PDT.
Sunshine
In August, the average sunshine is 11.8h.UV index
April through September, with an average maximum UV index of 5, are months with the highest UV index in Piedmont. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 5 in August interprets into the following recommendations:
Ensure safety - Recommendations to avert sunburn are presented. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Piedmont, CA
- Average high temperature in August: 75.7°F
The warmest month (with the highest average high temperature) is September (76.6°F).
The month with the lowest average high temperature is December (55.4°F).
- Average low temperature in August: 56.7°F
The month with the highest average low temperature is September (56.8°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).
Average pressure in August
Piedmont, CA
- Average pressure in August: 29.92"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in August
Piedmont, CA
- Average wind speed in August: 6.2mph
The windiest month (with the highest average wind speed) is May (7.3mph).
The calmest month (with the lowest average wind speed) is November (5mph).
Average humidity in August
Piedmont, CA
- Average humidity in August: 70%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (64%).
Average rainfall in August
Piedmont, CA
- Average rainfall in August: 0.08"
The wettest month (with the highest rainfall) is February (1.1").
The driest months (with the least rainfall) are June, July, August and September (0.08").
Average rainfall days in August
Piedmont, CA
- Average rainfall days in August: 1.5 days
The month with the highest number of rainy days is March (8.7 days).
The month with the least rainy days is August (1.5 days).
Average daylight in August /
Average sunshine in August
Piedmont, CA
- Average daylight in August: 13h and 36min
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: 11h and 48min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in August
Piedmont, CA
- Average sunshine days in August: 23.3 days
The month with the most sunshine days is October (26 days).
The month with the least sunshine days is February (20.5 days).
Average UV index in August
Piedmont, CA
- Average UV index in August: 5
The months with the highest UV index are April, May, June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in August
Piedmont, CA
- Average cloud cover in August: 14
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 11).
Average visibility in August
Piedmont, CA
- 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).
