Castaic Junction Weather Forecast

    • 37
    • 67

    Mostly Sunny

    • 40
    • 69

    Partly Cloudy

    • 40
    • 60

    Mostly Sunny

    • 40
    • 66

    Sunny

    • 43
    • 70

    Mostly Sunny

    • 43
    • 69

    Mostly Sunny

    • 45
    • 71

    Mostly Sunny

Today 1 Dec Santa Clarita Valley

Sunny. Highs in the lower to mid 60s. Northeast Winds 15 to 25 Mph.

Tonight 1 Dec Santa Clarita Valley

Mostly clear. Lows in the mid 30s to mid 40s. Northeast Winds 10 to 20 Mph. Gusts to 30 Mph in the evening.

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Castaic Junction Temperature Statistics

December Temperature

Van Nuys, Van Nuys Airport (16.8 miles)

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  • Average December

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Climate (2020–Present)

Van Nuys, Van Nuys Airport (16.8 miles)

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  • Average Low 2020–2025

    56.5 °F

  • Average 2020–2025

    67.4 °F

  • Average High 2020–2025

    79.3 °F
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