Castaic Lake State Recreation Area Weather Forecast

    • 49
    • 68

    Partly Sunny

    • 51
    • 67

    Partly Sunny

    • 51
    • 72

    Mostly Sunny

    • 42
    • 61

    Slight Chance Rain

    • 44
    • 50

    Mostly Cloudy

    • 45
    • 53

    Partly Sunny

    • 49
    • 63

    Mostly Sunny

Today 30 Apr Western San Gabriel Mountains and Highway 14 Corridor

Partly cloudy. Highs from the upper 60s to mid 70s at low Elevations to the upper 50s to mid 60s at high Elevations. Southwest Winds 15 to 25 Mph.

Tonight 30 Apr Western San Gabriel Mountains and Highway 14 Corridor

Partly cloudy except for patchy low Clouds and fog after midnight. Lows in the mid 40s to mid 50s. Southwest Winds 15 to 25 Mph in the evening.

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Castaic Lake State Recreation Area Temperature Statistics

April Temperature

Sandberg (14.9 miles)

  • Lowest 2 April, 2025

    29.8 °F

  • Average April

    51.4 °F

  • Highest 9 April, 2025

    75.7 °F

Climate (2020–Present)

Sandberg (14.9 miles)

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  • Average Low 2020–2025

    51.2 °F

  • Average 2020–2025

    58.9 °F

  • Average High 2020–2025

    67.6 °F
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