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City of Hercules, CAHercules, CA Weather Forecast
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Hercules Weather Forecast
| REST OF TONIGHT | SUNDAY | SUNDAY NIGHT | LABOR DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
 |  | | | |  |  |  |  | | | |
| Mostly Clear | Sunny | Mostly Clear | Sunny | Clear | Chance of Rain | Chance of Rain | Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Clear | Mostly Clear |
| Lo: 59°FLo: 15°C | Hi: 80°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 89°FHi: 32°C | Lo: 61°FLo: 16°C | Hi: 93°FHi: 34°C | Lo: 65°FLo: 18°C | Hi: 91°FHi: 33°C Lo: 69°FLo: 21°C | Hi: 91°FHi: 33°C Lo: 69°FLo: 21°C | Hi: 91°FHi: 33°C Lo: 65°FLo: 18°C | Hi: 91°FHi: 33°C Lo: 65°FLo: 18°C | Hi: 85°FHi: 29°C Lo: 61°FLo: 16°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 902 PM PDT Sat Sep 05 2026 
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Issued: 1151 PM PDT Sat Sep 5 2026
Key Messages
Updated at 111 PM PDT Sat Sep 5 2026- Hazardous conditions at Pacific Coast beaches through Monday
- Below normal temperatures through the weekend, gradual warming and drying trend kicks off Monday through Thursday
- Light rain showers from remnant tropical moisture possible Tuesday through Friday
Aviation
... (06Z TAFS) Issued at 940 PM PDT Sat Sep 5 2026
Generally VFR conditions with patches of stratus developing at the coast and along favored ridgelines through the night. Lower confidence...