National Weather Service Forecast for: Half Moon Bay CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 1:24 pm PST Dec 17, 2025
 
Tonight

Tonight: Patchy drizzle. Patchy dense fog. Otherwise, partly cloudy, with a steady temperature around 48. Calm wind.
Patchy
Drizzle and
Patchy Dense
Fog
 Thursday

Thursday: Areas of dense fog before 10am. Otherwise, mostly sunny, with a high near 61. Calm wind becoming northwest around 5 mph.
Areas Dense
Fog then
Mostly Sunny
 Thursday
Night
Thursday Night: A 40 percent chance of rain. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 48. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
Chance Rain
and Patchy
Fog
 Friday

Friday: Rain, mainly after 10am. High near 62. South southwest wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Rain

 Friday
Night
Friday Night: Rain, mainly before 4am. Low around 51. South southwest wind 6 to 8 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Rain

 Saturday

Saturday: Rain, mainly after 10am. High near 61. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Rain

 Saturday
Night
Saturday Night: Rain before 10pm, then showers and possibly a thunderstorm after 10pm. Low around 51. Chance of precipitation is 90%.
Showers

 Sunday

Sunday: Showers and possibly a thunderstorm before 10am, then rain after 10am. Cloudy, with a high near 61.
Showers

 Sunday
Night
Sunday Night: Rain. Cloudy, with a low around 50.
Rain
Lo 48 °F Hi 61 °F Lo 48 °F Hi 62 °F Lo 51 °F Hi 61 °F Lo 51 °F Hi 61 °F Lo 50 °F

 

Tonight
 
 Patchy drizzle. Patchy dense fog. Otherwise, partly cloudy, with a steady temperature around 48. Calm wind.
Thursday
 
 Areas of dense fog before 10am. Otherwise, mostly sunny, with a high near 61. Calm wind becoming northwest around 5 mph.
Thursday Night
 
 A 40 percent chance of rain. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 48. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
Friday
 
 Rain, mainly after 10am. High near 62. South southwest wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
 
 Rain, mainly before 4am. Low around 51. South southwest wind 6 to 8 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
 
 Rain, mainly after 10am. High near 61. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
 
 Rain before 10pm, then showers and possibly a thunderstorm after 10pm. Low around 51. Chance of precipitation is 90%.
Sunday
 
 Showers and possibly a thunderstorm before 10am, then rain after 10am. Cloudy, with a high near 61.
Sunday Night
 
 Rain. Cloudy, with a low around 50.
Monday
 
 Rain likely. Mostly cloudy, with a high near 60.
Monday Night
 
 Rain likely. Cloudy, with a low around 48.
Tuesday
 
 Rain likely. Mostly cloudy, with a high near 58.
Tuesday Night
 
 Rain. Cloudy, with a low around 47.
Wednesday
 
 Rain. Mostly cloudy, with a high near 59.

 

Forecast from NOAA-NWS for Half Moon Bay CA.