Castle Rock State Park Entrance Weather Forecast

    • 60
    • 71

    Decreasing Clouds

    • 61
    • 68

    Mostly Sunny

    • 63
    • 72

    Sunny

    • 63
    • 75

    Sunny

    • 66
    • 80

    Sunny

    • 68
    • 84

    Mostly Sunny

    • 67
    • 82

    Mostly Sunny

Today 16 Aug Santa Cruz Mountains

Mostly cloudy. Highs in the 60s to upper 70s. Northwest Winds around 5 Mph with Gusts to around 20 Mph.

Tonight 16 Aug Santa Cruz Mountains

Partly cloudy. Patchy fog after midnight. Lows in the 50s to lower 60s. Northwest Winds 5 to 10 Mph.

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Castle Rock State Park Entrance Temperature Statistics

August Temperature

San Jose, San Jose International Airport (12.4 miles)

  • Lowest 3 August, 2025

    56.6 °F

  • Average August

    69.9 °F

  • Highest 8 August, 2025

    90.6 °F

Climate (2020–Present)

San Jose, San Jose International Airport (12.4 miles)

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  • Average Low 2020–2025

    51.8 °F

  • Average 2020–2025

    61.5 °F

  • Average High 2020–2025

    72.6 °F
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