Topanga Weather Forecast

    • 65
    • 78

    Rain Showers Likely

    • 66
    • 86

    Mostly Sunny

    • 70
    • 90

    Slight Chance Rain Showers

    • 71
    • 93

    Mostly Sunny

    • 68
    • 91

    Mostly Sunny

    • 65
    • 86

    Mostly Sunny

Today 6 Sep Eastern Santa Monica Mountains Recreational Area

Showers likely in the Morning, then Showers likely with a slight chance of Thunderstorms in the afternoon. Highs in the mid 70s to lower 80s. Chance of precipitation 60 percent.

Tonight 6 Sep Eastern Santa Monica Mountains Recreational Area

Partly cloudy with a 20 percent chance of Showers in the Evening, becoming mostly clear after midnight. Lows in the 60s.

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Topanga Temperature Statistics

September Temperature

Santa Monica, Santa Monica Municipal Airport (9.9 miles)

  • Lowest 1 September, 2026

    63.6 °F

  • Average September

    70.3 °F

  • Highest 2 September, 2026

    77.6 °F

Climate (2021–2026)

Santa Monica, Santa Monica Municipal Airport (9.9 miles)

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  • Average Low 2021–2026

    56.4 °F

  • Average 2021–2026

    63.2 °F

  • Average High 2021–2026

    70.4 °F
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