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Mount Hamilton, CA Weather Forecast
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Mount Hamilton Weather Forecast
| TODAY | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | WEDNESDAY | THURSDAY | THURSDAY NIGHT | FRIDAY |
 |  |  | | | | | | | | |
| Sunny | Mostly Clear | Partly Cloudy | Clear | Sunny | Clear | Clear | Clear | Mostly Clear | Mostly Clear | Sunny |
| Hi: 89°FHi: 32°C | Lo: 66°FLo: 19°C | Hi: 89°FHi: 32°C | Lo: 66°FLo: 19°C | Hi: 89°FHi: 32°C | Lo: 66°FLo: 19°C | Hi: 89°FHi: 32°C Lo: 66°FLo: 19°C | Hi: 89°FHi: 32°C Lo: 66°FLo: 19°C | Hi: 89°FHi: 32°C Lo: 66°FLo: 19°C | Hi: 89°FHi: 32°C Lo: 66°FLo: 19°C | Hi: 80°FHi: 27°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 602 AM PDT Sat Oct 03 2026 
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Issued: 512 AM PDT Sat Oct 3 2026
Key Messages
Updated at 1243 AM PDT Sat Oct 3 2026- Moderate to major HeatRisk across the Bay Area and Central Coast Saturday and Sunday
- Moderate to major HeatRisk across the interior Bay Area and Central Coast Monday through Thursday
- Elevated fire weather conditions across the higher terrain through Thursday
Aviation
... (12Z TAFS) Issued at 512 AM PDT Sat Oct 3 2026
Satellite and surface observations show dense fog with surface visibilities less than 1/4 mile from the San Francisco Peninsula to the...