Castle Rock State Park Entrance Weather Forecast

    • 46
    • 62

    Mostly Sunny

    • 49
    • 59

    Partly Sunny

    • 47
    • 61

    Partly Sunny

    • 50
    • 69

    Mostly Sunny

    • 52
    • 68

    Partly Sunny

    • 55
    • 74

    Mostly Sunny

Today 24 May Santa Cruz Mountains

Partly cloudy in the morning then becoming sunny. Highs in the mid 50s to lower 70s. West Winds 5 to 10 Mph.

Tonight 24 May Santa Cruz Mountains

Partly cloudy. Patchy fog after midnight. Lows in the mid 40s. Northwest Winds 5 to 10 Mph.

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Castle Rock State Park Entrance Temperature Statistics

May Temperature

San Jose, San Jose International Airport (12.4 miles)

  • Lowest 4 May, 2025

    46.7 °F

  • Average May

    63.8 °F

  • Highest 9 May, 2025

    87.7 °F

Climate (2020–Present)

San Jose, San Jose International Airport (12.4 miles)

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  • Average Low 2020–2025

    51.9 °F

  • Average 2020–2025

    61.6 °F

  • Average High 2020–2025

    72.8 °F
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