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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: 11:26 pm PDT Jun 29, 2026		Print

  • Tonight

    Tonight: Mostly clear, with a low around 56. Calm wind.

    Low: 56 °F

    Mostly Clear


  • Tuesday

    Tuesday: Sunny, with a high near 86. Calm wind becoming south around 6 mph in the afternoon.

    High: 86 °F

    Sunny


  • Tuesday
    Night

    Tuesday Night: Patchy fog after 4am. Otherwise, increasing clouds, with a low around 52. Light and variable wind.

    Low: 52 °F

    Clear then
    Patchy Fog

  • Wednesday

    Wednesday: Partly sunny, then gradually becoming sunny, with a high near 85. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 85 °F

    Becoming
    Sunny

  • Wednesday
    Night

    Wednesday Night: Patchy fog after 3am. Otherwise, mostly clear, with a low around 51. Southwest wind around 6 mph becoming calm in the evening.

    Low: 51 °F

    Mostly Clear
    then Patchy
    Fog

  • Thursday

    Thursday: Areas of fog before 8am. Otherwise, mostly sunny, with a high near 82.

    High: 82 °F

    Areas Fog
    then Sunny

  • Thursday
    Night

    Thursday Night: Patchy fog after 3am. Otherwise, mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear
    then Patchy
    Fog

  • Friday

    Friday: Areas of fog before 7am. Otherwise, sunny, with a high near 87.

    High: 87 °F

    Areas Fog
    then Sunny

  • Friday
    Night

    Friday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear


    • Tonight: Mostly clear, with a low around 56. Calm wind.

    Tuesday: Sunny, with a high near 86. Calm wind becoming south around 6 mph in the afternoon.

    Tuesday Night: Patchy fog after 4am. Otherwise, increasing clouds, with a low around 52. Light and variable wind.

    Wednesday: Partly sunny, then gradually becoming sunny, with a high near 85. Calm wind becoming south southwest around 5 mph in the afternoon.

    Wednesday Night: Patchy fog after 3am. Otherwise, mostly clear, with a low around 51. Southwest wind around 6 mph becoming calm in the evening.

    Thursday: Areas of fog before 8am. Otherwise, mostly sunny, with a high near 82.

    Thursday Night: Patchy fog after 3am. Otherwise, mostly clear, with a low around 52.

    Friday: Areas of fog before 7am. Otherwise, sunny, with a high near 87.

    Friday Night: Mostly clear, with a low around 55.

    Independence Day: Sunny, with a high near 89.

    Saturday Night: Mostly clear, with a low around 54.

    Sunday: Mostly sunny, with a high near 86.

    Sunday Night: Partly cloudy, with a low around 53.

    Monday: Mostly sunny, with a high near 85.


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

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