| NWS Forecast for: North Bay Interior Valleys Issued by: National Weather Service San Francisco Bay Area/Monterey, CA Last Update: 902 PM PDT Wed Oct 21 2026 |  |
| Rest Of Tonight: Mostly cloudy. Patchy fog late in the evening. Areas of fog after midnight. A chance of showers. Lows in the mid 40s to upper 50s. West winds up to 5 mph. Thursday: Patchy fog in the morning. A chance of showers in the morning, then showers likely in the afternoon. Highs in the upper 50s to lower 70s. South winds 5 to 10 mph. Thursday Night: Mostly cloudy in the evening then becoming partly cloudy. Patchy fog in the evening. Areas of fog after midnight. Lows in the lower 40s to mid 50s. West winds 5 to 10 mph. Friday: Mostly cloudy in the morning then becoming sunny. Patchy fog in the morning. Highs in the 60s to mid 70s. North winds 5 to 10 mph. Friday Night: Clear. Lows in the mid 30s to lower 50s. Northwest winds 5 to 15 mph. Saturday: Sunny. Highs in the 60s to upper 70s. Saturday Night: Mostly clear in the evening then becoming partly cloudy. Lows in the upper 30s to lower 50s. Sunday: Partly cloudy. Highs in the mid 60s to upper 70s. Sunday Night: Mostly clear. Lows in the upper 30s to lower 50s. Monday Through Wednesday: Partly cloudy. Highs in the lower 60s to mid 70s. Lows in the upper 30s to lower 50s. | |
| Zone Forecast: North Bay Interior Valleys | |
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