Castaic Weather Forecast

    • 54
    • 78

    Sunny

    • 50
    • 79

    Sunny

    • 52
    • 78

    Sunny

    • 53
    • 78

    Sunny

    • 53
    • 79

    Sunny

    • 52
    • 80

    Breezy

Today 31 Jan Santa Clarita Valley

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

Tonight 31 Jan Santa Clarita Valley

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