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National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
7-Day Forecast 38.01°N 121.64°W (Text-Only)
NWS Forecast for: Bethel Island CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Last Update: 12:26 am PST Dec 5, 2025		Print

  • Overnight

    Overnight: Partly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Partly Cloudy


  • Friday

    Friday: Mostly sunny, with a high near 58. Light and variable wind.

    High: 58 °F

    Mostly Sunny


  • Friday
    Night

    Friday Night: Patchy fog after 4am. Otherwise, mostly clear, with a low around 42. Southeast wind around 5 mph.

    Low: 42 °F

    Partly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 7am. Otherwise, mostly sunny, with a high near 60. Northwest wind 3 to 5 mph.

    High: 60 °F

    Patchy Fog
    then Sunny

  • Saturday
    Night

    Saturday Night: Patchy fog after 1am. Otherwise, mostly clear, with a low around 45. Light west northwest wind.

    Low: 45 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny


  • Sunday
    Night

    Sunday Night: Patchy fog before 1am. Otherwise, partly cloudy, with a low around 45.

    Low: 45 °F

    Patchy Fog


  • Monday

    Monday: Partly sunny, with a high near 61.

    High: 61 °F

    Partly Sunny


  • Monday
    Night

    Monday Night: Patchy fog before 3am, then patchy fog after 5am. Otherwise, partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy
    then Patchy
    Fog

    • Overnight: Partly cloudy, with a low around 40. Calm wind.

    Friday: Mostly sunny, with a high near 58. Light and variable wind.

    Friday Night: Patchy fog after 4am. Otherwise, mostly clear, with a low around 42. Southeast wind around 5 mph.

    Saturday: Patchy fog before 7am. Otherwise, mostly sunny, with a high near 60. Northwest wind 3 to 5 mph.

    Saturday Night: Patchy fog after 1am. Otherwise, mostly clear, with a low around 45. Light west northwest wind.

    Sunday: Partly sunny, with a high near 60.

    Sunday Night: Patchy fog before 1am. Otherwise, partly cloudy, with a low around 45.

    Monday: Partly sunny, with a high near 61.

    Monday Night: Patchy fog before 3am, then patchy fog after 5am. Otherwise, partly cloudy, with a low around 44.

    Tuesday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 60.

    Tuesday Night: Patchy fog. Otherwise, mostly cloudy, with a low around 45.

    Wednesday: Patchy fog. Otherwise, partly sunny, with a high near 61.

    Wednesday Night: Patchy fog. Otherwise, partly cloudy, with a low around 46.

    Thursday: Patchy fog. Otherwise, mostly sunny, with a high near 61.


    Bethel Island CA
     38.01°N 121.64°W (Elev. 3 ft)

    Visit your local NWS office at: https://www.weather.gov/mtr