Castaic Weather Forecast

    • 53
    • 84

    Sunny

    • 54
    • 85

    Sunny

    • 52
    • 84

    Sunny

    • 54
    • 83

    Sunny

    • 58
    • 88

    Sunny

    • 61
    • 94

    Sunny

Today 23 Jul Santa Clarita Valley

Mostly cloudy in the morning then sunny. Highs in the lower to mid 80s. Southwest Winds 10 to 20 Mph in the afternoon.

Tonight 23 Jul Santa Clarita Valley

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

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Castaic Temperature Statistics

July Temperature

Van Nuys, Van Nuys Airport (20.5 miles)

  • Lowest 7 July, 2025

    58.6 °F

  • Average July

    75.3 °F

  • Highest 9 July, 2025

    97.6 °F

Climate (2020–Present)

Van Nuys, Van Nuys Airport (20.5 miles)

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  • Average Low 2020–2025

    56.7 °F

  • Average 2020–2025

    67.6 °F

  • Average High 2020–2025

    79.7 °F
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