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National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
7-Day Forecast 38.51°N 122.46°W (Text-Only)
NWS Forecast for: Saint Helena CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Last Update: 7:35 pm PST Dec 4, 2025		Print

  • Overnight

    Overnight: Mostly clear, with a low around 42. Calm wind.

    Low: 42 °F

    Mostly Clear


  • Friday

    Friday: Sunny, with a high near 65. Calm wind.

    High: 65 °F

    Sunny


  • Friday
    Night

    Friday Night: Patchy fog. Otherwise, mostly clear, with a low around 43. Calm wind.

    Low: 43 °F

    Patchy Fog


  • Saturday

    Saturday: Patchy fog before noon. Otherwise, sunny, with a high near 65. Calm wind.

    High: 65 °F

    Patchy Fog
    then Sunny

  • Saturday
    Night

    Saturday Night: Patchy fog after 1am. Otherwise, partly cloudy, with a low around 44. Light north wind.

    Low: 44 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 65.

    High: 65 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday
    Night

    Sunday Night: Patchy fog. Otherwise, partly cloudy, with a low around 43.

    Low: 43 °F

    Patchy Fog


  • Monday

    Monday: Areas of fog before 10am. Otherwise, mostly sunny, with a high near 66.

    High: 66 °F

    Areas Fog
    then Mostly
    Sunny

  • Monday
    Night

    Monday Night: Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 44.

    Low: 44 °F

    Patchy Fog




    • Overnight: Mostly clear, with a low around 42. Calm wind.

    Friday: Sunny, with a high near 65. Calm wind.

    Friday Night: Patchy fog. Otherwise, mostly clear, with a low around 43. Calm wind.

    Saturday: Patchy fog before noon. Otherwise, sunny, with a high near 65. Calm wind.

    Saturday Night: Patchy fog after 1am. Otherwise, partly cloudy, with a low around 44. Light north wind.

    Sunday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 65.

    Sunday Night: Patchy fog. Otherwise, partly cloudy, with a low around 43.

    Monday: Areas of fog before 10am. Otherwise, mostly sunny, with a high near 66.

    Monday Night: Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 44.

    Tuesday: Patchy fog before 10am. Otherwise, mostly sunny, with a high near 67.

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

    Wednesday: Patchy fog. Otherwise, mostly sunny, with a high near 69.

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

    Thursday: Areas of fog. Otherwise, sunny, with a high near 69.


    Saint Helena CA
     38.51°N 122.46°W (Elev. 203 ft)

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