August weather in Hercules, CA
The average temperature in Hercules in August is 71.1°F (56.1°F–86.0°F). Average precipitation: 0.04 inches.
August is a summer month in Hercules, and is warmer than the annual average of 61.6°F. Daily temperatures swing about 29.9°F between overnight low and afternoon high. Daylight averages about 13h 28m. For travel, August is a comfortable month to visit.
Avg High
86.0°F
Avg Low
56.1°F
Precipitation
0.04 in
Daylight
13h 28m
August records in Hercules
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 93.9°F (2000) | 53.1°F (2006) | 0.00 in (1998) |
| August 2 | 102.9°F (2017) | 52.0°F (1999) | 0.00 in (1998) |
| August 3 | 104.0°F (1998) | 53.1°F (2018) | 0.00 in (1998) |
| August 4 | 105.1°F (1998) | 54.0°F (2001) | 0.00 in (1998) |
| August 5 | 100.9°F (1998) | 52.0°F (2002) | 0.00 in (1998) |
| August 6 | 102.0°F (2023) | 46.9°F (2002) | 0.00 in (1998) |
| August 7 | 99.0°F (2023) | 51.1°F (2002) | 0.00 in (1998) |
| August 8 | 98.1°F (2002) | 52.0°F (2002) | 0.00 in (1998) |
| August 9 | 100.9°F (2002) | 53.1°F (2018) | 0.00 in (1998) |
| August 10 | 96.1°F (2018) | 54.0°F (2001) | 0.00 in (1998) |
| August 11 | 95.0°F (1998) | 53.1°F (2001) | 0.00 in (1998) |
| August 12 | 97.0°F (2019) | 53.1°F (2001) | 0.00 in (1998) |
| August 13 | 100.9°F (2020) | 52.0°F (2001) | 0.00 in (1998) |
| August 14 | 109.0°F (2020) | 52.0°F (2001) | 0.00 in (1998) |
| August 15 | 107.1°F (2020) | 52.0°F (2001) | 0.00 in (1998) |
| August 16 | 108.0°F (2015) | 52.0°F (2001) | 0.03 in (2020) |
| August 17 | 106.0°F (2015) | 53.1°F (2001) | 0.00 in (1998) |
| August 18 | 100.0°F (2020) | 54.0°F (2005) | 0.00 in (1998) |
| August 19 | 100.9°F (2020) | 54.0°F (2001) | 0.00 in (1998) |
| August 20 | 95.0°F (2025) | 54.0°F (2002) | 0.00 in (1998) |
| August 21 | 98.1°F (2025) | 53.1°F (2000) | 0.00 in (1998) |
| August 22 | 97.0°F (2019) | 53.1°F (1998) | 0.00 in (1998) |
| August 23 | 98.1°F (1999) | 52.0°F (2002) | 0.00 in (1998) |
| August 24 | 96.1°F (2023) | 54.0°F (2000) | 0.00 in (1998) |
| August 25 | 98.1°F (2003) | 53.1°F (2000) | 0.00 in (1998) |
| August 26 | 105.1°F (2017) | 50.0°F (2005) | 0.00 in (1998) |
| August 27 | 106.0°F (2017) | 53.1°F (2002) | 0.00 in (1998) |
| August 28 | 104.0°F (2021) | 51.1°F (2005) | 0.00 in (1998) |
| August 29 | 96.1°F (2017) | 51.1°F (2006) | 0.00 in (1998) |
| August 30 | 100.0°F (2025) | 53.1°F (2005) | 0.04 in (2000) |
| August 31 | 104.0°F (2017) | 51.1°F (1999) | 0.00 in (1998) |