Castaic Weather Forecast

    • 55
    • 99

    Hot

    • 53
    • 97

    Hot

    • 50
    • 98

    Mostly Sunny

    • 61
    • 90

    Sunny

    • 61
    • 90

    Mostly Sunny

    • 58
    • 92

    Sunny

Today 19 Mar Santa Clarita Valley

Sunny. Highs 95 to 100. Northeast Winds 10 to 20 Mph in the morning.

Tonight 19 Mar Santa Clarita Valley

Clear. Lows in the 50s to around 60 except the mid 60s to around 70 in the Hills. West Winds 10 to 20 Mph in the evening.

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Castaic Temperature Statistics

March Temperature

Van Nuys, Van Nuys Airport (20.5 miles)

  • Lowest 11 March, 2026

    50 °F

  • Average March

    67.3 °F

  • Highest 16 March, 2026

    93.9 °F

Climate (2021–Present)

Van Nuys, Van Nuys Airport (20.5 miles)

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  • Average Low 2021–2026

    56.6 °F

  • Average 2021–2026

    67.5 °F

  • Average High 2021–2026

    79.5 °F
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