Winnetka Weather Forecast

    • 73
    • 98

    Chance Rain Showers

    • 74
    • 107

    Hot

    • 72
    • 103

    Hot

    • 66
    • 94

    Mostly Sunny

    • 63
    • 91

    Mostly Sunny

    • 63
    • 90

    Sunny

    • 62
    • 90

    Mostly Sunny

Today 8 Sep Western San Fernando Valley

Mostly cloudy with a chance of Showers and a slight chance of Thunderstorms. Highs 94 to 100. Chance of precipitation 30 percent.

Tonight 8 Sep Western San Fernando Valley

Mostly clear. Lows in the mid 70s to around 80.

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Winnetka Temperature Statistics

September Temperature

Van Nuys, Van Nuys Airport (4.3 miles)

  • Lowest 2 September, 2026

    60.7 °F

  • Average September

    73.6 °F

  • Highest 5 September, 2026

    91.7 °F

Climate (2021–2026)

Van Nuys, Van Nuys Airport (4.3 miles)

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  • Average Low 2021–2026

    56.6 °F

  • Average 2021–2026

    67.7 °F

  • Average High 2021–2026

    79.6 °F
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