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National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
7-Day Forecast 37.94°N 121.94°W (Text-Only)
NWS Forecast for: Clayton CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Last Update: 7:35 pm PST Dec 4, 2025		Print

  • Tonight

    Tonight: Mostly clear, with a low around 40. Calm wind.

    Low: 40 °F

    Mostly Clear


  • Friday

    Friday: Sunny, with a high near 63. Calm wind becoming north northeast around 5 mph.

    High: 63 °F

    Sunny


  • Friday
    Night

    Friday Night: Mostly clear, with a low around 41. South southwest wind around 5 mph becoming calm after midnight.

    Low: 41 °F

    Mostly Clear


  • Saturday

    Saturday: Patchy fog before 8am. Otherwise, sunny, with a high near 64. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 64 °F

    Patchy Fog
    then Sunny

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 44. Light east wind.

    Low: 44 °F

    Mostly Clear


  • Sunday

    Sunday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 64.

    High: 64 °F

    Patchy Fog
    then Partly
    Sunny

  • Sunday
    Night

    Sunday Night: Patchy fog after 3am. Otherwise, partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy
    then Patchy
    Fog

  • Monday

    Monday: Areas of fog before 9am. Otherwise, mostly sunny, with a high near 65.

    High: 65 °F

    Areas Fog
    then Mostly
    Sunny

  • Monday
    Night

    Monday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy


    • Tonight: Mostly clear, with a low around 40. Calm wind.

    Friday: Sunny, with a high near 63. Calm wind becoming north northeast around 5 mph.

    Friday Night: Mostly clear, with a low around 41. South southwest wind around 5 mph becoming calm after midnight.

    Saturday: Patchy fog before 8am. Otherwise, sunny, with a high near 64. Calm wind becoming north northwest around 5 mph in the afternoon.

    Saturday Night: Mostly clear, with a low around 44. Light east wind.

    Sunday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 64.

    Sunday Night: Patchy fog after 3am. Otherwise, partly cloudy, with a low around 43.

    Monday: Areas of fog before 9am. Otherwise, mostly sunny, with a high near 65.

    Monday Night: Partly cloudy, with a low around 43.

    Tuesday: Patchy fog before 8am. Otherwise, partly sunny, with a high near 64.

    Tuesday Night: Patchy fog. Otherwise, partly cloudy, with a low around 44.

    Wednesday: Patchy fog. Otherwise, mostly sunny, with a high near 65.

    Wednesday Night: Patchy fog. Otherwise, mostly clear, with a low around 44.

    Thursday: Patchy fog. Otherwise, mostly sunny, with a high near 66.


    Clayton CA
     37.94°N 121.94°W (Elev. 400 ft)

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