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City of Martinez, CAMartinez, CA Weather Forecast
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| TODAY | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | WEDNESDAY | THURSDAY | FRIDAY |
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| Sunny | Clear | Sunny | Clear | Sunny | Clear | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Clear |
| Hi: 83°FHi: 28°C | Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 89°FHi: 32°C | Lo: 59°FLo: 15°C | Hi: 85°FHi: 29°C Lo: 59°FLo: 15°C | Hi: 85°FHi: 29°C Lo: 59°FLo: 15°C | Hi: 85°FHi: 29°C Lo: 59°FLo: 15°C | Hi: 85°FHi: 29°C Lo: 59°FLo: 15°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 602 AM PDT Sat Sep 12 2026 
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Issued: 637 AM PDT Sat Sep 12 2026
Key Messages
Updated at 1017 PM PDT Fri Sep 11 2026- Breezy onshore winds Saturday afternoon through Sunday morning
- Temperatures near seasonal averages through the next week
Aviation
... (12Z TAFS) Issued at 524 AM PDT Sat Sep 12 2026
It`s VFR except for patchy stratus and mist/fog /MVFR-LIFR/ this morning. Surface to lower level cool air advection on northwest winds will increase today, the wind flow trapped beneath a lower level temperature inversion resulting in areas of strengthening, gusty onsho...