National Weather Service Forecast for: Ben Lomond CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 12:46 am PDT Aug 20, 2026
 
Overnight

Overnight: Mostly cloudy, with a low around 56. Calm wind.
Mostly Cloudy
Thursday

Thursday: Partly sunny, with a high near 82. Calm wind becoming south around 5 mph in the afternoon.
Partly Sunny
Thursday
Night
Thursday Night: Mostly cloudy, with a low around 55. Light north northwest wind.
Mostly Cloudy
Friday

Friday: Mostly sunny, with a high near 81. Calm wind becoming west northwest around 5 mph in the afternoon.
Mostly Sunny
Friday
Night
Friday Night: Mostly clear, with a low around 53. Northwest wind around 5 mph becoming calm  in the evening.
Mostly Clear
Saturday

Saturday: Patchy fog before 8am.  Otherwise, sunny, with a high near 82.
Patchy Fog
then Sunny
Saturday
Night
Saturday Night: Mostly clear, with a low around 54.
Mostly Clear
Sunday

Sunday: Mostly sunny, with a high near 82.
Mostly Sunny
Sunday
Night
Sunday Night: Partly cloudy, with a low around 54.
Partly Cloudy
Lo 56 °F Hi 82 °F Lo 55 °F Hi 81 °F Lo 53 °F Hi 82 °F Lo 54 °F Hi 82 °F Lo 54 °F

 

Overnight
 
Mostly cloudy, with a low around 56. Calm wind.
Thursday
 
Partly sunny, with a high near 82. Calm wind becoming south around 5 mph in the afternoon.
Thursday Night
 
Mostly cloudy, with a low around 55. Light north northwest wind.
Friday
 
Mostly sunny, with a high near 81. Calm wind becoming west northwest around 5 mph in the afternoon.
Friday Night
 
Mostly clear, with a low around 53. Northwest wind around 5 mph becoming calm in the evening.
Saturday
 
Patchy fog before 8am. Otherwise, sunny, with a high near 82.
Saturday Night
 
Mostly clear, with a low around 54.
Sunday
 
Mostly sunny, with a high near 82.
Sunday Night
 
Partly cloudy, with a low around 54.
Monday
 
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 80.
Monday Night
 
Patchy fog. Otherwise, partly cloudy, with a low around 53.
Tuesday
 
Areas of fog. Otherwise, mostly sunny, with a high near 80.
Tuesday Night
 
Partly cloudy, with a low around 54.
Wednesday
 
Mostly sunny, with a high near 82.

 

Forecast from NOAA-NWS for Ben Lomond CA.