Castaic Lagoon Weather Forecast

    • 53
    • 77

    Sunny

    • 54
    • 80

    Sunny

    • 53
    • 81

    Mostly Sunny

    • 54
    • 79

    Sunny

    • 52
    • 77

    Mostly Sunny

    • 52
    • 74

    Mostly Sunny

Today 17 Oct Santa Clarita Valley

Sunny. Highs in the mid to upper 70s. Northeast Winds 15 to 25 Mph.

Tonight 17 Oct Santa Clarita Valley

Clear. Lows in the lower to mid 50s. Northeast Winds 15 to 25 Mph.

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Castaic Lagoon Temperature Statistics

October Temperature

Van Nuys, Van Nuys Airport (21.1 miles)

  • Lowest 14 October, 2025

    52 °F

  • Average October

    67.1 °F

  • Highest 10 October, 2025

    91 °F

Climate (2020–Present)

Van Nuys, Van Nuys Airport (21.1 miles)

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  • Average Low 2020–2025

    56.5 °F

  • Average 2020–2025

    67.4 °F

  • Average High 2020–2025

    79.4 °F
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