Castle Rock State Park Weather Forecast

    • 40
    • 51

    Increasing Clouds

    • 42
    • 56

    Mostly Sunny

    • 45
    • 63

    Mostly Sunny

    • 47
    • 67

    Mostly Sunny

    • 49
    • 68

    Chance Rain

    • 46
    • 61

    Partly Sunny

Today 2 Apr Santa Cruz Mountains

Partly cloudy in the morning then becoming sunny. Highs in the 40s to mid 50s. Northwest Winds 10 to 20 Mph. Gusts up to 35 Mph in the afternoon.

Tonight 2 Apr Santa Cruz Mountains

Partly cloudy. Lows in the mid 30s to lower 40s. Northwest Winds 10 to 20 Mph.

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Castle Rock State Park Temperature Statistics

April Temperature

San Jose, San Jose International Airport (13.7 miles)

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  • Average April

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Climate (2020–Present)

San Jose, San Jose International Airport (13.7 miles)

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  • Average Low 2020–2025

    51.9 °F

  • Average 2020–2025

    61.6 °F

  • Average High 2020–2025

    72.7 °F
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