Castaic Weather Forecast

    • 56
    • 78

    Mostly Sunny

    • 54
    • 78

    Sunny

    • 50
    • 79

    Sunny

    • 52
    • 78

    Sunny

    • 53
    • 78

    Sunny

    • 53
    • 79

    Sunny

    • 52
    • 80

    Breezy

Today 30 Jan Santa Clarita Valley

Sunny. Highs in the mid 70s. Northeast Winds 15 to 25 Mph with Gusts to 40 Mph.

Tonight 30 Jan Santa Clarita Valley

Mostly clear. Lows in the upper 40s to mid 50s. Northeast Winds 15 to 25 Mph with Gusts to 40 Mph.

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Castaic Temperature Statistics

January Temperature

Van Nuys, Van Nuys Airport (20.5 miles)

  • Lowest 25 January, 2026

    40.6 °F

  • Average January

    59.9 °F

  • Highest 14 January, 2026

    85.6 °F

Climate (2021–Present)

Van Nuys, Van Nuys Airport (20.5 miles)

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  • Average Low 2021–2026

    56.5 °F

  • Average 2021–2026

    67.4 °F

  • Average High 2021–2026

    79.3 °F
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