Castaic Lake Weather Forecast

    • 35
    • 62

    Sunny

    • 36
    • 67

    Sunny

    • 41
    • 66

    Sunny

    • 44
    • 64

    Breezy

    • 43
    • 61

    Breezy

    • 48
    • 68

    Mostly Sunny

    • 45
    • 67

    Mostly Sunny

Today 17 Jan Santa Clarita Valley

Sunny. Highs in the lower 60s.

Tonight 17 Jan Santa Clarita Valley

Clear. Areas of frost after midnight. Lows in the 30s.

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Castaic Lake Temperature Statistics

January Temperature

Los Angeles, Whiteman Airport (22.4 miles)

  • Lowest 14 January, 2025

    44.6 °F

  • Average January

    64.6 °F

  • Highest 2 January, 2025

    78.8 °F

Climate (2020–Present)

Los Angeles, Whiteman Airport (22.4 miles)

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  • Average Low 2020–2025

    60.3 °F

  • Average 2020–2025

    70.1 °F

  • Average High 2020–2025

    76.2 °F
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