Castaic Lagoon Weather Forecast

    • 52
    • 90

    Increasing Clouds

    • 49
    • 84

    Partly Sunny

    • 52
    • 81

    Mostly Sunny

    • 55
    • 80

    Mostly Sunny

    • 55
    • 81

    Mostly Sunny

    • 55
    • 83

    Mostly Sunny

Today 5 Jun Santa Clarita Valley

Sunny. Highs in the mid to upper 80s. South Winds 10 to 20 Mph in the afternoon.

Tonight 5 Jun Santa Clarita Valley

Mostly clear in the evening then mostly cloudy. Lows in the upper 40s to mid 50s. South Winds 10 to 20 Mph in the evening.

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Castaic Lagoon Temperature Statistics

June Temperature

Van Nuys, Van Nuys Airport (21.1 miles)

  • Lowest 3 June, 2026

    57 °F

  • Average June

    68.8 °F

  • Highest 3 June, 2026

    84 °F

Climate (2021–Present)

Van Nuys, Van Nuys Airport (21.1 miles)

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  • Average Low 2021–2026

    56.6 °F

  • Average 2021–2026

    67.6 °F

  • Average High 2021–2026

    79.6 °F
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