National Weather Service Forecast for: Graton CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 1:26 pm PDT May 26, 2026
 
This
Afternoon
This Afternoon: Sunny, with a high near 71. West northwest wind around 15 mph, with gusts as high as 26 mph.
Sunny

Tonight

Tonight: Patchy fog after 5am.  Otherwise, mostly clear, with a low around 46. Northwest wind 9 to 14 mph becoming light  after midnight. Winds could gust as high as 28 mph.
Mostly Clear
then Patchy
Fog
Wednesday

Wednesday: Mostly sunny, with a high near 72. Calm wind becoming west southwest 5 to 7 mph in the afternoon.
Mostly Sunny

Wednesday
Night
Wednesday Night: A slight chance of rain before 3am, then a slight chance of rain after 4am.  Patchy fog after 2am.  Otherwise, mostly cloudy, with a low around 49. Light south wind.  Chance of precipitation is 20%.
Slight Chance
Rain and
Patchy Fog
Thursday

Thursday: A 30 percent chance of rain, mainly before 11am.  Patchy fog before 8am.  Otherwise, partly sunny, with a high near 72. Calm wind becoming southwest 5 to 7 mph in the afternoon.  New precipitation amounts of less than a tenth of an inch possible.
Chance Rain
and Patchy
Fog
Thursday
Night
Thursday Night: Patchy fog after 1am.  Otherwise, partly cloudy, with a low around 49.
Partly Cloudy
then Patchy
Fog
Friday

Friday: Patchy fog before 7am.  Otherwise, mostly sunny, with a high near 72.
Patchy Fog
then Mostly
Sunny
Friday
Night
Friday Night: Patchy fog after 2am.  Otherwise, mostly clear, with a low around 49.
Mostly Clear
then Patchy
Fog
Saturday

Saturday: Patchy fog before 7am.  Otherwise, mostly sunny, with a high near 78.
Patchy Fog
then Sunny
Hi 71 °F Lo 46 °F Hi 72 °F Lo 49 °F Hi 72 °F Lo 49 °F Hi 72 °F Lo 49 °F Hi 78 °F

 

This Afternoon
 
Sunny, with a high near 71. West northwest wind around 15 mph, with gusts as high as 26 mph.
Tonight
 
Patchy fog after 5am. Otherwise, mostly clear, with a low around 46. Northwest wind 9 to 14 mph becoming light after midnight. Winds could gust as high as 28 mph.
Wednesday
 
Mostly sunny, with a high near 72. Calm wind becoming west southwest 5 to 7 mph in the afternoon.
Wednesday Night
 
A slight chance of rain before 3am, then a slight chance of rain after 4am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 49. Light south wind. Chance of precipitation is 20%.
Thursday
 
A 30 percent chance of rain, mainly before 11am. Patchy fog before 8am. Otherwise, partly sunny, with a high near 72. Calm wind becoming southwest 5 to 7 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
 
Patchy fog after 1am. Otherwise, partly cloudy, with a low around 49.
Friday
 
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 72.
Friday Night
 
Patchy fog after 2am. Otherwise, mostly clear, with a low around 49.
Saturday
 
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 78.
Saturday Night
 
Mostly clear, with a low around 48.
Sunday
 
Sunny, with a high near 82.
Sunday Night
 
Mostly clear, with a low around 51.
Monday
 
Sunny, with a high near 83.

 

Forecast from NOAA-NWS for Graton CA.