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Napa County Weather Forecast
| REST OF TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | MONDAY | TUESDAY |
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| Mostly Clear | Sunny | Mostly Clear | Sunny | Mostly Clear | Partly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Clear |
| Lo: 56°FLo: 13°C | Hi: 97°FHi: 36°C | Lo: 56°FLo: 13°C | Hi: 86°FHi: 30°C | Lo: 56°FLo: 13°C | Hi: 81°FHi: 27°C | Lo: 59°FLo: 15°C | Hi: 66°FHi: 19°C | Hi: 77°FHi: 25°C Lo: 46°FLo: 8°C | Hi: 77°FHi: 25°C Lo: 46°FLo: 8°C | Hi: 77°FHi: 25°C Lo: 46°FLo: 8°C | Hi: 77°FHi: 25°C Lo: 46°FLo: 8°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 902 PM PDT Tue Oct 06 2026 
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Issued: 940 PM PDT Tue Oct 6 2026
Key Messages
Updated at 1212 PM PDT Tue Oct 6 2026- Hazardous heat inland persists through Thursday, never leave children or pets in unattended vehicles!
- Elevated fire weather conditions persist in the interior through Thursday
- Coastal flooding concerns due to astronomical tides and thermal expansion through the weekend
- Hazardous beach conditions along Pacific coastline later this week into the weekend due to long period swell
Aviation
... (06Z TAFS) Issued at 940 PM PDT Tue Oct 6 2026
Stratus and fo...