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Grattan Playground Weather Forecast
| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | TUESDAY | WEDNESDAY | THURSDAY |
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| Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Clear | Partly Cloudy |
| Hi: 66°FHi: 19°C | Lo: 55°FLo: 13°C | Hi: 65°FHi: 18°C | Lo: 55°FLo: 13°C | Hi: 60°FHi: 16°C | Lo: 55°FLo: 13°C | Hi: 66°FHi: 19°C Lo: 59°FLo: 15°C | Hi: 66°FHi: 19°C Lo: 59°FLo: 15°C | Hi: 66°FHi: 19°C Lo: 59°FLo: 15°C | Hi: 66°FHi: 19°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 602 AM PDT Fri Sep 25 2026 
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Issued: 448 AM PDT Fri Sep 25 2026
Key Messages
Updated at 954 PM PDT Thu Sep 24 2026- Cooler conditions arrive Friday into the weekend.
- Near seasonal temperatures early next week.
Aviation
... (12Z TAFS) Issued at 430 AM PDT Fri Sep 25 2026
Hybrid marine layer this morning as some clouds formed ahead of a cold front. ACARs and sounding puts the inversion near 1000-1200 feet. Pretty shallow with IFR to LIFR conditions underneath it. Biggest impacts will be HAF, inside SF Bay, and Salinas Valley. Could see some sunrise clouds arrive fo...