Castaic Lake Weather Forecast

    • 49
    • 75

    Sunny

    • 47
    • 72

    Breezy

    • 52
    • 71

    Partly Sunny

    • 49
    • 65

    Mostly Sunny

    • 49
    • 62

    Partly Sunny

    • 49
    • 66

    Partly Sunny

Today 19 Jan Santa Clarita Valley

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

Tonight 19 Jan Santa Clarita Valley

Clear. Lows in the upper 30s and 40s except around 60 in the Hills. Northeast Winds 15 to 25 Mph.

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Castaic Lake Temperature Statistics

January Temperature

Los Angeles, Whiteman Airport (22.4 miles)

  • Lowest 7 January, 2026

    51.8 °F

  • Average January

    65 °F

  • Highest 14 January, 2026

    84.2 °F

Climate (2021–Present)

Los Angeles, Whiteman Airport (22.4 miles)

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  • Average Low 2021–2026

    60 °F

  • Average 2021–2026

    69.9 °F

  • Average High 2021–2026

    76 °F
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