Topanga State Park Weather Forecast

    • 70
    • 85

    Slight Chance Rain

    • 72
    • 90

    Partly Sunny

    • 73
    • 92

    Mostly Sunny

    • 69
    • 89

    Mostly Sunny

    • 64
    • 83

    Mostly Sunny

    • 63
    • 78

    Mostly Sunny

Today 7 Sep Eastern Santa Monica Mountains Recreational Area

Partly cloudy with a 20 percent chance of rain. Highs in the 80s to lower 90s. Southwest Winds around 15 Mph in the afternoon.

Tonight 7 Sep Eastern Santa Monica Mountains Recreational Area

Mostly clear in the evening then partly cloudy. Lows in the mid 60s to mid 70s.

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Topanga State Park Temperature Statistics

September Temperature

Los Angeles, Whiteman Airport (13.7 miles)

  • Lowest 1 September, 2026

    64.4 °F

  • Average September

    76 °F

  • Highest 1 September, 2026

    84.2 °F

Climate (2021–2026)

Los Angeles, Whiteman Airport (13.7 miles)

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  • Average Low 2021–2026

    60.5 °F

  • Average 2021–2026

    70.4 °F

  • Average High 2021–2026

    76.5 °F
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