National Weather Service Forecast for: 9 Miles NNE Bethel Island CA
Issued by: National Weather Service Sacramento, CA
Updated: 1:21 pm PST Feb 1, 2026
 
Overnight

Overnight: Widespread dense fog, mainly after 2am. Otherwise, mostly clear, with a low around 40. West northwest wind 3 to 5 mph.
Dense Fog

 Monday

Monday: Widespread dense fog before 10am. Otherwise, sunny, with a high near 63. North wind 3 to 5 mph.
Dense Fog
then Sunny
 Monday
Night
Monday Night: Partly cloudy, with a low around 39. Calm wind.
Partly Cloudy

 Tuesday

Tuesday: Partly sunny, then gradually becoming sunny, with a high near 64. North wind 3 to 6 mph.
Becoming
Sunny
 Tuesday
Night
Tuesday Night: Widespread fog, mainly after 11pm. Otherwise, mostly clear, with a low around 40. Calm wind.
Fog

 Wednesday

Wednesday: Areas of fog before 11am. Otherwise, mostly sunny, with a high near 63.
Areas Fog
then Sunny
 Wednesday
Night
Wednesday Night: Widespread fog, mainly between 11pm and 4am. Otherwise, partly cloudy, with a low around 41.
Fog

 Thursday

Thursday: Areas of fog before 10am. Otherwise, mostly sunny, with a high near 62.
Areas Fog
then Mostly
Sunny
 Thursday
Night
Thursday Night: Widespread fog, mainly before 3am. Otherwise, mostly cloudy, with a low around 44.
Fog
Lo 40 °F Hi 63 °F Lo 39 °F Hi 64 °F Lo 40 °F Hi 63 °F Lo 41 °F Hi 62 °F Lo 44 °F

 

Overnight
 
 Widespread dense fog, mainly after 2am. Otherwise, mostly clear, with a low around 40. West northwest wind 3 to 5 mph.
Monday
 
 Widespread dense fog before 10am. Otherwise, sunny, with a high near 63. North wind 3 to 5 mph.
Monday Night
 
 Partly cloudy, with a low around 39. Calm wind.
Tuesday
 
 Partly sunny, then gradually becoming sunny, with a high near 64. North wind 3 to 6 mph.
Tuesday Night
 
 Widespread fog, mainly after 11pm. Otherwise, mostly clear, with a low around 40. Calm wind.
Wednesday
 
 Areas of fog before 11am. Otherwise, mostly sunny, with a high near 63.
Wednesday Night
 
 Widespread fog, mainly between 11pm and 4am. Otherwise, partly cloudy, with a low around 41.
Thursday
 
 Areas of fog before 10am. Otherwise, mostly sunny, with a high near 62.
Thursday Night
 
 Widespread fog, mainly before 3am. Otherwise, mostly cloudy, with a low around 44.
Friday
 
 Widespread fog, mainly before 9am. Otherwise, partly sunny, with a high near 64.
Friday Night
 
 Widespread fog. Otherwise, partly cloudy, with a low around 44.
Saturday
 
 Widespread fog. Otherwise, mostly sunny, with a high near 63.
Saturday Night
 
 Partly cloudy, with a low around 45.
Sunday
 
 A slight chance of rain. Partly sunny, with a high near 64.

 

Forecast from NOAA-NWS for 9 Miles NNE Bethel Island CA.