NWS Forecast for Graton CA

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

Updated: 1:40 am PST Dec 5, 2025

Overnight Patchy Fog	Friday Patchy Fog then Sunny	Friday Night Patchy Dense Fog	Saturday Patchy Dense Fog then Sunny	Saturday Night Partly Cloudy	Sunday Mostly Sunny	Sunday Night Partly Cloudy	Monday Areas Fog then Sunny	Monday Night Partly Cloudy then Patchy Fog
Lo 37 °F	Hi 62 °F	Lo 43 °F	Hi 64 °F	Lo 43 °F	Hi 65 °F	Lo 44 °F	Hi 65 °F	Lo 45 °F

Coastal Flood Advisory
Cold Weather Advisory

Overnight	Patchy fog. Otherwise, partly cloudy, with a low around 37. Calm wind.
Friday	Patchy fog before 10am. Otherwise, mostly sunny, with a high near 62. Calm wind becoming south around 5 mph in the afternoon.
Friday Night	Patchy dense fog before 8pm, then patchy dense fog after 2am. Otherwise, partly cloudy, with a low around 43. Calm wind becoming north around 5 mph.
Saturday	Patchy dense fog before noon. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 64. Light and variable wind becoming northwest 5 to 10 mph in the afternoon.
Saturday Night	Partly cloudy, with a low around 43. Northwest wind 6 to 11 mph.
Sunday	Mostly sunny, with a high near 65.
Sunday Night	Partly cloudy, with a low around 44.
Monday	Areas of fog before 10am. Otherwise, mostly sunny, with a high near 65.
Monday Night	Patchy fog after 1am. Otherwise, partly cloudy, with a low around 45.
Tuesday	Areas of fog before 10am. Otherwise, partly sunny, with a high near 67.
Tuesday Night	Patchy fog. Otherwise, mostly cloudy, with a low around 47.
Wednesday	Patchy fog. Otherwise, mostly sunny, with a high near 69.
Wednesday Night	Patchy fog. Otherwise, mostly clear, with a low around 47.
Thursday	Areas of fog. Otherwise, sunny, with a high near 68.

Forecast from NOAA-NWS for Graton CA.