August weather forecastPenngrove, CA
August
Weather in August
The last month of the summer, August, is also a moderately hot month in Penngrove, California, with an average temperature fluctuating between 55°F (12.8°C) and 79.9°F (26.6°C).Temperature
Penngrove's peak temperatures tend to occur in July and August, with an average high-temperature of 79.9°F (26.6°C).Humidity
In August, the average relative humidity is 67%.Rainfall
June through September are months with the least rain when the rain falls for 0.5 days and typically aggregates up to 0.04" (1mm) of rain.Daylight
In August, the average length of the day is 13h and 36min.On the first day of the month, sunrise is at 6:13 am and sunset at 8:20 pm. On the last day of August, in Penngrove, sunrise is at 6:40 am and sunset at 7:41 pm PDT.
Sunshine
In August, the average sunshine in Penngrove is 11.8h.UV index
In Penngrove, the average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index, 5 during August, leads to the following recommendations:
Undertake protective steps - Preventing sun damage is advised. The solar radiation around mid-day is intense; avoid the Sun and stay safe. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Penngrove, CA
- Average high temperature in August: 79.9°F
The warmest months (with the highest average high temperature) are July and August (79.9°F).
The month with the lowest average high temperature is December (55.6°F).
- Average low temperature in August: 55°F
The months with the highest average low temperature are August and September (55°F).
The coldest month (with the lowest average low temperature) is December (42.4°F).
Average pressure in August
Penngrove, 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
Penngrove, CA
- Average wind speed in August: 5.1mph
The windiest month (with the highest average wind speed) is May (6.8mph).
The calmest month (with the lowest average wind speed) is November (4.7mph).
Average humidity in August
Penngrove, CA
- Average humidity in August: 67%
The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is September (62%).
Average rainfall in August
Penngrove, CA
- Average rainfall in August: 0.04"
The wettest month (with the highest rainfall) is February (0.91").
The driest months (with the least rainfall) are June, July, August and September (0.04").
Average rainfall days in August
Penngrove, CA
- Average rainfall days in August: 0.5 days
The month with the highest number of rainy days is March (8.7 days).
The month with the least rainy days is August (0.5 days).
Average daylight in August /
Average sunshine in August
Penngrove, CA
- Average daylight in August: 13h and 36min
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 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 42min).
Average sunshine days in August
Penngrove, CA
- Average sunshine days in August: 27.1 days
The month with the most sunshine days is June (27.7 days).
The month with the least sunshine days is March (20.8 days).
Average UV index in August
Penngrove, CA
- Average UV index in August: 5
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in August
Penngrove, CA
- Average cloud cover in August: 10
The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in August
Penngrove, 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).
