National Weather Service Forecast for: Belmont CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 2:54 pm PST Dec 22, 2025
 
This
Afternoon
This Afternoon: A 50 percent chance of rain. Cloudy, with a steady temperature around 58. West southwest wind 5 to 7 mph becoming calm.
Chance Rain

 Tonight

Tonight: A 50 percent chance of rain. Cloudy, with a low around 53. Light and variable wind. New precipitation amounts of less than a tenth of an inch possible.
Chance Rain

 Tuesday

Tuesday: Rain, mainly after 10am. High near 62. South southeast wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Rain

 Tuesday
Night
Tuesday Night: Rain. Low around 50. Breezy, with a southeast wind 21 to 23 mph, with gusts as high as 46 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Rain and
Breezy
 Wednesday

Wednesday: Rain, mainly before 4pm, then showers and possibly a thunderstorm after 4pm. High near 61. South wind 8 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Showers

 Wednesday
Night
Wednesday Night: Showers and possibly a thunderstorm before 7pm, then rain between 7pm and 1am, then showers and possibly a thunderstorm after 1am. Some of the storms could be severe. Low around 52. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Showers then
Severe
T-Storms
 Christmas
Day
Christmas Day: Showers and possibly a thunderstorm before 7am, then rain between 7am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 57. Breezy. Chance of precipitation is 100%.
Showers and
Breezy
 Thursday
Night
Thursday Night: Showers and possibly a thunderstorm before 10pm, then rain after 10pm. Cloudy, with a low around 47. Breezy.
Showers and
Breezy
 Friday

Friday: Rain before 10am, then showers and possibly a thunderstorm between 10am and 4pm, then rain likely and possibly a thunderstorm after 4pm. Cloudy, with a high near 56.
Showers
Hi 58 °F Lo 53 °F Hi 62 °F Lo 50 °F Hi 61 °F Lo 52 °F Hi 57 °F Lo 47 °F Hi 56 °F

High Wind Watch
Flood Watch
 

This Afternoon
 
 A 50 percent chance of rain. Cloudy, with a steady temperature around 58. West southwest wind 5 to 7 mph becoming calm.
Tonight
 
 A 50 percent chance of rain. Cloudy, with a low around 53. Light and variable wind. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
 
 Rain, mainly after 10am. High near 62. South southeast wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
 
 Rain. Low around 50. Breezy, with a southeast wind 21 to 23 mph, with gusts as high as 46 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Wednesday
 
 Rain, mainly before 4pm, then showers and possibly a thunderstorm after 4pm. High near 61. South wind 8 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
 
 Showers and possibly a thunderstorm before 7pm, then rain between 7pm and 1am, then showers and possibly a thunderstorm after 1am. Some of the storms could be severe. Low around 52. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Christmas Day
 
 Showers and possibly a thunderstorm before 7am, then rain between 7am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 57. Breezy. Chance of precipitation is 100%.
Thursday Night
 
 Showers and possibly a thunderstorm before 10pm, then rain after 10pm. Cloudy, with a low around 47. Breezy.
Friday
 
 Rain before 10am, then showers and possibly a thunderstorm between 10am and 4pm, then rain likely and possibly a thunderstorm after 4pm. Cloudy, with a high near 56.
Friday Night
 
 Rain likely, mainly before 10pm. Mostly cloudy, with a low around 44.
Saturday
 
 A slight chance of rain. Mostly sunny, with a high near 56.
Saturday Night
 
 Mostly clear, with a low around 40.
Sunday
 
 Sunny, with a high near 56.
Sunday Night
 
 Mostly clear, with a low around 41.
Monday
 
 Sunny, with a high near 57.

 

Forecast from NOAA-NWS for Belmont CA.