NWS Forecast for Sonoma CA

National Weather Service Forecast for: Sonoma CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA

Updated: 1:40 am PST Dec 5, 2025

Overnight Patchy Frost	Friday Patchy Frost then Sunny	Friday Night Patchy Fog	Saturday Becoming Sunny	Saturday Night Patchy Fog	Sunday Areas Fog then Mostly Sunny	Sunday Night Partly Cloudy then Areas Fog	Monday Patchy Fog then Sunny	Monday Night Patchy Fog
Lo 36 °F	Hi 60 °F	Lo 40 °F	Hi 62 °F	Lo 41 °F	Hi 63 °F	Lo 42 °F	Hi 64 °F	Lo 43 °F

Cold Weather Advisory
Coastal Flood Advisory

Overnight	Patchy frost after 2am. Otherwise, mostly clear, with a low around 36. Light south wind.
Friday	Patchy frost before 9am. Otherwise, sunny, with a high near 60. Calm wind becoming south around 6 mph in the afternoon.
Friday Night	Patchy fog after 10pm. Otherwise, mostly clear, with a low around 40. Calm wind.
Saturday	Partly sunny, then gradually becoming sunny, with a high near 62. Calm wind becoming west northwest 5 to 9 mph in the afternoon.
Saturday Night	Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 41. Light and variable wind.
Sunday	Areas of fog before 10am. Otherwise, mostly sunny, with a high near 63.
Sunday Night	Areas of fog after 1am. Otherwise, partly cloudy, with a low around 42.
Monday	Patchy fog before 11am. Otherwise, mostly sunny, with a high near 64.
Monday Night	Patchy fog after 9pm. Otherwise, partly cloudy, with a low around 43.
Tuesday	Areas of fog before 11am. Otherwise, mostly sunny, with a high near 64.
Tuesday Night	Patchy fog. Otherwise, partly cloudy, with a low around 45.
Wednesday	Patchy fog. Otherwise, mostly sunny, with a high near 66.
Wednesday Night	Patchy fog. Otherwise, mostly clear, with a low around 45.
Thursday	Areas of fog. Otherwise, mostly sunny, with a high near 66.

Forecast from NOAA-NWS for Sonoma CA.