Winnetka Weather Forecast

    • 56
    • 94

    Mostly Sunny

    • 56
    • 91

    Becoming Sunny

    • 60
    • 96

    Sunny

    • 71
    • 101

    Hot

    • 72
    • 101

    Hot

    • 72
    • 102

    Hot

    • 71
    • 100

    Hot

Today 29 Sep Western San Fernando Valley

Sunny. Highs 95 to 101.

Tonight 29 Sep Western San Fernando Valley

Clear. Lows in the mid 50s to mid 60s. Northwest Winds around 15 Mph shifting to the northeast after midnight.

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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

    77 °F

  • Highest 9 September, 2026

    107.7 °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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