National Weather Service Forecast for: Bethel Island CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 2:54 pm PST Dec 22, 2025
 
This
Afternoon
This Afternoon: Rain likely. Cloudy, with a high near 59. Southeast wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Rain Likely
 Tonight

Tonight: A 40 percent chance of rain, mainly before 4am. Cloudy, with a low around 53. West northwest wind around 5 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.
Chance Rain
 Tuesday

Tuesday: Rain likely, mainly after 4pm. Cloudy, with a high near 60. South southeast wind 6 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Rain Likely
 Tuesday
Night
Tuesday Night: Rain. Low around 53. Breezy, with a southeast wind 18 to 26 mph, with gusts as high as 50 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Rain and
Breezy
 Wednesday

Wednesday: Rain before 4pm, then showers and possibly a thunderstorm after 4pm. High near 58. South wind 5 to 11 mph becoming east southeast in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers
 Wednesday
Night
Wednesday Night: Showers and possibly a thunderstorm before 7pm, then rain after 7pm. Low around 54. Breezy. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Showers and
Breezy
 Christmas
Day
Christmas Day: Rain before 1pm, then showers and possibly a thunderstorm after 1pm. High near 56. 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.
Showers
 Friday

Friday: Rain. Cloudy, with a high near 52.
Rain
Hi 59 °F Lo 53 °F Hi 60 °F Lo 53 °F Hi 58 °F Lo 54 °F Hi 56 °F Lo 47 °F Hi 52 °F

High Wind Watch
Flood Watch
 

This Afternoon
 
 Rain likely. Cloudy, with a high near 59. Southeast wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
 
 A 40 percent chance of rain, mainly before 4am. Cloudy, with a low around 53. West northwest wind around 5 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
 
 Rain likely, mainly after 4pm. Cloudy, with a high near 60. South southeast wind 6 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
 
 Rain. Low around 53. Breezy, with a southeast wind 18 to 26 mph, with gusts as high as 50 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
 
 Rain before 4pm, then showers and possibly a thunderstorm after 4pm. High near 58. South wind 5 to 11 mph becoming east southeast in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
 
 Showers and possibly a thunderstorm before 7pm, then rain after 7pm. Low around 54. Breezy. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Christmas Day
 
 Rain before 1pm, then showers and possibly a thunderstorm after 1pm. High near 56. 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.
Friday
 
 Rain. Cloudy, with a high near 52.
Friday Night
 
 Rain likely, mainly before 10pm. Mostly cloudy, with a low around 44.
Saturday
 
 Mostly sunny, with a high near 51.
Saturday Night
 
 Mostly clear, with a low around 39.
Sunday
 
 Sunny, with a high near 49.
Sunday Night
 
 Patchy fog. Otherwise, mostly clear, with a low around 38.
Monday
 
 Mostly sunny, with a high near 49.

 

Forecast from NOAA-NWS for Bethel Island CA.