August weather forecastActon, CA
August
Weather in August
The last month of the summer, August, is another hot month in Acton, California, with temperature in the range of an average high of 89.2°F (31.8°C) and an average low of 63.1°F (17.3°C).Temperature
August, recognised by an average high temperature of 89.2°F (31.8°C) and a low of 63.1°F (17.3°C), is Acton's warmest month.Humidity
The least humid month is August, with an average relative humidity of 38%.Rainfall
In August, the rain falls for 3.1 days. Throughout August, 0.24" (6mm) of precipitation is accumulated. Throughout the year, in Acton, California, there are 51.4 rainfall days, and 7.6" (193mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall in Acton.Daylight
In Acton, the average length of the day in August is 13h and 24min.On the first day of August, sunrise is at 6:03 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 6:25 am and sunset at 7:19 pm PDT.
Sunshine
In August, the average sunshine in Acton, California, is 12h.UV index
The months with the highest UV index are June through September, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.Note: During August, 6 as the daily maximum UV index converts into the following advice:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Acton, CA
- Average high temperature in August: 89.2°F
The warmest month (with the highest average high temperature) is August (89.2°F).
The month with the lowest average high temperature is December (55.6°F).
- Average low temperature in August: 63.1°F
The month with the highest average low temperature is August (63.1°F).
The coldest month (with the lowest average low temperature) is December (39.2°F).
Average pressure in August
Acton, CA
- Average pressure in August: 29.89"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in August
Acton, CA
- Average wind speed in August: 5.9mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is September (5.7mph).
Average humidity in August
Acton, CA
- Average humidity in August: 38%
The months with the highest relative humidity are February, March and December (54%).
The month with the lowest relative humidity is August (38%).
Average rainfall in August
Acton, CA
- Average rainfall in August: 0.24"
The wettest month (with the highest rainfall) is December (1.65").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in August
Acton, CA
- Average rainfall days in August: 3.1 days
The month with the highest number of rainy days is March (7.4 days).
The month with the least rainy days is June (1.2 days).
Average snowfall in August
Acton, CA
- Average snowfall in August: 0"
The month with the highest snowfall is December (3.23").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
Acton, CA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (0.8 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
Acton, CA
- Average daylight in August: 13h and 24min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in August: 12h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 6h and 42min).
Average sunshine days in August
Acton, CA
- Average sunshine days in August: 26.5 days
The month with the most sunshine days is June (28.3 days).
The month with the least sunshine days is February (21.3 days).
Average UV index in August
Acton, CA
- Average UV index in August: 6
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in August
Acton, CA
- Average cloud cover in August: 5
The months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in August
Acton, 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).





