Castle Rock State Park Entrance Weather Forecast

    • 60
    • 83

    Sunny

    • 48
    • 69

    Mostly Sunny

    • 47
    • 55

    Mostly Cloudy

    • 49
    • 56

    Chance Rain

    • 51
    • 59

    Chance Rain

    • 48
    • 57

    Partly Sunny

Today 17 Oct Santa Cruz Mountains

Sunny. Highs in the 80s to mid 90s. Southeast Winds around 5 Mph in the morning. Becoming light.

Tonight 17 Oct Santa Cruz Mountains

Clear. Lows in the 50s to lower 60s. Light Winds.

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Castle Rock State Park Entrance Temperature Statistics

October Temperature

San Jose, San Jose International Airport (12.4 miles)

  • Lowest 11 October, 2026

    47.6 °F

  • Average October

    70.6 °F

  • Highest 4 October, 2026

    94.6 °F

Climate (2021–2026)

San Jose, San Jose International Airport (12.4 miles)

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  • Average Low 2021–2026

    52.3 °F

  • Average 2021–2026

    62.2 °F

  • Average High 2021–2026

    72.8 °F
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