National Weather Service Forecast for: Half Moon Bay CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 2:06 am PST Nov 2, 2026
 
Overnight

Overnight: Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 45. Calm wind.
Patchy Fog

 Monday

Monday: Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 65. Calm wind becoming west southwest around 5 mph in the afternoon.
Patchy Fog
then Mostly
Cloudy
 Monday
Night
Monday Night: Mostly cloudy, with a low around 48. Calm wind becoming south southwest around 5 mph after midnight.
Mostly Cloudy

 Tuesday

Tuesday: Rain before 1pm, then a chance of rain after 2pm. High near 63. Southwest wind 8 to 10 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Rain then
Chance Rain

 Tuesday
Night
Tuesday Night: A 40 percent chance of rain before 10pm. Patchy fog before 1am. Otherwise, mostly cloudy, with a low around 47. Calm wind.
Chance Rain
and Patchy
Fog then
Patchy Fog
 Wednesday

Wednesday: Mostly sunny, with a high near 65.
Mostly Sunny

 Wednesday
Night
Wednesday Night: Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 49.
Mostly Cloudy
then Patchy
Fog
 Thursday

Thursday: Patchy fog before 7am. Otherwise, mostly sunny, with a high near 67.
Patchy Fog
then Mostly
Sunny
 Thursday
Night
Thursday Night: Partly cloudy, with a low around 48.
Partly Cloudy
Lo 45 °F Hi 65 °F Lo 48 °F Hi 63 °F Lo 47 °F Hi 65 °F Lo 49 °F Hi 67 °F Lo 48 °F

Beach Hazards Statement
 

Overnight
 
 Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 45. Calm wind.
Monday
 
 Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 65. Calm wind becoming west southwest around 5 mph in the afternoon.
Monday Night
 
 Mostly cloudy, with a low around 48. Calm wind becoming south southwest around 5 mph after midnight.
Tuesday
 
 Rain before 1pm, then a chance of rain after 2pm. High near 63. Southwest wind 8 to 10 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
 
 A 40 percent chance of rain before 10pm. Patchy fog before 1am. Otherwise, mostly cloudy, with a low around 47. Calm wind.
Wednesday
 
 Mostly sunny, with a high near 65.
Wednesday Night
 
 Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 49.
Thursday
 
 Patchy fog before 7am. Otherwise, mostly sunny, with a high near 67.
Thursday Night
 
 Partly cloudy, with a low around 48.
Friday
 
 Mostly sunny, with a high near 70.
Friday Night
 
 Mostly clear, with a low around 49.
Saturday
 
 Sunny, with a high near 74.
Saturday Night
 
 Partly cloudy, with a low around 50.
Sunday
 
 Mostly sunny, with a high near 73.

 

Forecast from NOAA-NWS for Half Moon Bay CA.