National Weather Service Forecast for: Half Moon Bay CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 1:36 pm PDT Jul 12, 2026
 
Tonight

Tonight: Mostly cloudy, with a low around 57. Calm wind.
Mostly Cloudy
 Monday

Monday: Mostly cloudy, with a high near 71. Calm wind becoming west southwest around 6 mph in the afternoon.
Mostly Cloudy
 Monday
Night
Monday Night: Mostly cloudy, with a low around 59. Light west southwest wind.
Mostly Cloudy
 Tuesday

Tuesday: Mostly sunny, with a high near 72. Calm wind becoming west 5 to 8 mph in the afternoon.
Mostly Sunny
 Tuesday
Night
Tuesday Night: Mostly cloudy, with a low around 56. West wind 5 to 7 mph becoming calm in the evening.
Mostly Cloudy
 Wednesday

Wednesday: Mostly sunny, with a high near 67.
Mostly Sunny
 Wednesday
Night
Wednesday Night: Mostly cloudy, with a low around 54.
Mostly Cloudy
 Thursday

Thursday: Partly sunny, with a high near 62.
Partly Sunny
 Thursday
Night
Thursday Night: Mostly cloudy, with a low around 52.
Mostly Cloudy
Lo 57 °F Hi 71 °F Lo 59 °F Hi 72 °F Lo 56 °F Hi 67 °F Lo 54 °F Hi 62 °F Lo 52 °F

Coastal Flood Advisory
 

Tonight
 
 Mostly cloudy, with a low around 57. Calm wind.
Monday
 
 Mostly cloudy, with a high near 71. Calm wind becoming west southwest around 6 mph in the afternoon.
Monday Night
 
 Mostly cloudy, with a low around 59. Light west southwest wind.
Tuesday
 
 Mostly sunny, with a high near 72. Calm wind becoming west 5 to 8 mph in the afternoon.
Tuesday Night
 
 Mostly cloudy, with a low around 56. West wind 5 to 7 mph becoming calm in the evening.
Wednesday
 
 Mostly sunny, with a high near 67.
Wednesday Night
 
 Mostly cloudy, with a low around 54.
Thursday
 
 Partly sunny, with a high near 62.
Thursday Night
 
 Mostly cloudy, with a low around 52.
Friday
 
 Mostly cloudy, with a high near 63.
Friday Night
 
 Patchy fog. Otherwise, mostly cloudy, with a low around 55.
Saturday
 
 Patchy fog. Otherwise, mostly cloudy, with a high near 64.
Saturday Night
 
 Patchy fog. Otherwise, cloudy, with a low around 56.
Sunday
 
 Mostly cloudy, with a high near 65.

 

Forecast from NOAA-NWS for Half Moon Bay CA.