Castaic Weather Forecast

    • 44
    • 65

    Rain Showers Likely

    • 47
    • 72

    Sunny

    • 54
    • 80

    Sunny

    • 60
    • 83

    Breezy

    • 60
    • 85

    Breezy

    • 58
    • 86

    Sunny

Today 12 Oct Santa Clarita Valley

Showers likely. Highs in the upper 50s to mid 60s. Southwest Winds 10 to 20 Mph. Chance of precipitation 70 percent.

Tonight 12 Oct Santa Clarita Valley

Partly cloudy with a 20 percent chance of Showers in the Evening, becoming mostly clear after midnight. Lows in the 40s to around 50. Southwest Winds 10 to 20 Mph in the evening.

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Castaic Temperature Statistics

October Temperature

Van Nuys, Van Nuys Airport (20.5 miles)

  • Lowest 1 October, 2026

    64.7 °F

  • Average October

    83.5 °F

  • Highest 3 October, 2026

    103.6 °F

Climate (2021–2026)

Van Nuys, Van Nuys Airport (20.5 miles)

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  • Average Low 2021–2026

    56.7 °F

  • Average 2021–2026

    67.8 °F

  • Average High 2021–2026

    79.7 °F
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