Average annual temperature is 14.1 °C
Absolute maximum temperature: 36.1 °C
Absolute minimum temperature: 1.5 °C
Number of sunny days: 262 days
Number of rainy days: 103 days
Look at detailed online map of City of Hercules
* Weather data for City of Hercules United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 16.5 | 17.8 | 17.5 | 26.9 | 28.0 | 25.6 | 32.7 | 36.1 | 30.5 | 33.4 | 24.9 | 17.6 |
| Average daytime temperature (°C) | 13.6 | 13.3 | 13.3 | 18.5 | 18.7 | 20.4 | 26.7 | 27.8 | 24.0 | 24.9 | 18.4 | 15.4 |
| Average temperature (°C) | 10.0 | 8.7 | 9.5 | 12.4 | 13.9 | 15.4 | 17.9 | 19.4 | 18.0 | 18.0 | 13.6 | 11.6 |
| Average night temperature (°C) | 7.2 | 5.1 | 6.7 | 8.3 | 11.0 | 12.3 | 13.0 | 14.8 | 14.6 | 13.5 | 9.8 | 8.8 |
| Absolute minimum temperature (°C) | 2.0 | 1.5 | 3.2 | 4.1 | 7.8 | 11.0 | 11.9 | 13.2 | 13.0 | 8.1 | 5.6 | 4.5 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.8 | 14.5 | 13.6 | 12.4 | 11.2 | 10.1 | 9.6 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 5.8 | 7.7 | 7.7 | 11.4 | 11.6 | 12.8 | 13.0 | 12.2 | 10.7 | 9.3 | 8.0 | 5.9 |
| Precipitation (mm) | 297 | 85 | 228 | 7 | 47 | 0 | 0 | 0 | 2 | 3 | 68 | 122 |
| Sunny days | 12 | 15 | 10 | 27 | 23 | 28 | 30 | 28 | 25 | 26 | 21 | 17 |
| Rainy days | 19 | 13 | 21 | 3 | 8 | 2 | 1 | 3 | 5 | 5 | 9 | 14 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit City of Hercules during the most sunny months:
The largest precipitation sum in City of Hercules is at