National Weather Service Forecast for: Graton CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 2:07 am PDT Sep 13, 2026
 
Overnight

Overnight: Mostly clear, with a low around 52. West northwest wind around 7 mph.
Mostly Clear
 Sunday

Sunday: Sunny, with a high near 80. Northwest wind 8 to 11 mph, with gusts as high as 22 mph.
Sunny
 Sunday
Night
Sunday Night: Mostly clear, with a low around 52. Northwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 21 mph.
Mostly Clear
 Monday

Monday: Sunny, with a high near 86. Calm wind becoming west southwest 5 to 7 mph in the afternoon.
Sunny
 Monday
Night
Monday Night: Patchy fog after 3am. Otherwise, mostly clear, with a low around 51. West southwest wind around 5 mph becoming calm in the evening.
Clear then
Patchy Fog
 Tuesday

Tuesday: Areas of fog before 9am. Otherwise, sunny, with a high near 85.
Areas Fog
then Sunny
 Tuesday
Night
Tuesday Night: Patchy fog after 11pm. Otherwise, mostly clear, with a low around 51.
Patchy Fog
 Wednesday

Wednesday: Areas of fog before 9am. Otherwise, mostly sunny, with a high near 82.
Areas Fog
then Sunny
 Wednesday
Night
Wednesday Night: Patchy fog after 10pm. Otherwise, mostly clear, with a low around 51.
Patchy Fog
Lo 52 °F Hi 80 °F Lo 52 °F Hi 86 °F Lo 51 °F Hi 85 °F Lo 51 °F Hi 82 °F Lo 51 °F

 

Overnight
 
 Mostly clear, with a low around 52. West northwest wind around 7 mph.
Sunday
 
 Sunny, with a high near 80. Northwest wind 8 to 11 mph, with gusts as high as 22 mph.
Sunday Night
 
 Mostly clear, with a low around 52. Northwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 21 mph.
Monday
 
 Sunny, with a high near 86. Calm wind becoming west southwest 5 to 7 mph in the afternoon.
Monday Night
 
 Patchy fog after 3am. Otherwise, mostly clear, with a low around 51. West southwest wind around 5 mph becoming calm in the evening.
Tuesday
 
 Areas of fog before 9am. Otherwise, sunny, with a high near 85.
Tuesday Night
 
 Patchy fog after 11pm. Otherwise, mostly clear, with a low around 51.
Wednesday
 
 Areas of fog before 9am. Otherwise, mostly sunny, with a high near 82.
Wednesday Night
 
 Patchy fog after 10pm. Otherwise, mostly clear, with a low around 51.
Thursday
 
 Areas of fog before 9am. Otherwise, mostly sunny, with a high near 81.
Thursday Night
 
 Patchy fog. Otherwise, mostly clear, with a low around 51.
Friday
 
 Areas of fog. Otherwise, mostly sunny, with a high near 80.
Friday Night
 
 Patchy fog. Otherwise, mostly clear, with a low around 51.
Saturday
 
 Areas of fog. Otherwise, mostly sunny, with a high near 82.

 

Forecast from NOAA-NWS for Graton CA.