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City of Walnut Creek, CAWalnut Creek, CA Weather Forecast
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Walnut Creek Weather Forecast
| REST OF TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
 |  | | | | | | | |  | | |
| Clear | Sunny | Mostly Clear | Sunny | Clear | Sunny | Mostly Clear | Mostly Clear | Clear | Partly Cloudy | Clear | Mostly Clear |
| Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C | Lo: 55°FLo: 13°C | Hi: 89°FHi: 32°C | Lo: 55°FLo: 13°C | Hi: 89°FHi: 32°C | Hi: 85°FHi: 29°C Lo: 59°FLo: 15°C | Hi: 85°FHi: 29°C Lo: 59°FLo: 15°C | Lo: 59°FLo: 15°C | Hi: 89°FHi: 32°C | Lo: 59°FLo: 15°C | Hi: 89°FHi: 32°C Lo: 59°FLo: 15°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 902 PM PDT Sat Sep 12 2026 
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Issued: 1023 PM PDT Sat Sep 12 2026
Key Messages
Updated at 1022 PM PDT Sat Sep 12 2026- Breezy onshore winds persist through Sunday afternoon
- Temperatures near seasonal averages through the upcoming week
- Dry offshore winds for the higher terrain Sunday night into Monday night
Aviation
... (06Z TAFS) Issued at 1022 PM PDT Sat Sep 12 2026
Generally VFR conditions persist through the TAF period, barring the immediate coast and some favored foothill regions where MVFR-IFR stratus has set up on the western side of the San Mateo Peninsula a...