Expires:202512212000;;951562 FPUS56 KMTR 210502 ZFPMTR San Francisco Bay Area/Central California Zone Forecast National Weather Service San Francisco Bay Area 901 PM PST Sat Dec 20 2025 This is an automatically generated product that provides average values for large geographic areas. For a more site specific forecast...please visit weather.gov/sanfrancisco (1) Select a location from the drop down menu above the map... -- or -- (2) Click a location on the map. You can refine your selection by clicking on the map displayed on the resulting page. CAZ503-212000- Sonoma Coastal Range- 901 PM PST Sat Dec 20 2025 ...FLOOD WATCH IN EFFECT THROUGH MONDAY AFTERNOON... .REST OF TONIGHT...Rain. Rain may be heavy at times. Lows in the mid 50s. South winds 5 to 10 mph. .SUNDAY...Rain. Rain may be heavy at times. Highs in the upper 50s. Southwest winds 10 to 15 mph with gusts to around 30 mph. .SUNDAY NIGHT...Rain in the evening, then rain likely after midnight. Patchy fog after midnight. Lows in the upper 40s. Southwest winds around 5 mph in the evening...becoming light. .MONDAY...Mostly cloudy. Patchy fog in the morning. A chance of rain. Highs in the upper 50s. Light winds. Chance of rain 50 percent. .MONDAY NIGHT...Rain. Lows in the mid 40s. Light winds. .TUESDAY...Rain. Highs in the mid 50s. .TUESDAY NIGHT...Rain. Lows in the mid 40s. .WEDNESDAY...Rain. Highs in the upper 50s. .WEDNESDAY NIGHT THROUGH THURSDAY NIGHT...Rain. Lows in the upper 40s. Highs in the mid 50s. .FRIDAY...Rain likely. Highs in the upper 50s. .FRIDAY NIGHT...Mostly cloudy. A chance of rain. Lows in the mid 40s. .SATURDAY...Partly cloudy. A slight chance of rain. Highs in the upper 50s. $$