Castle Rock State Park Weather Forecast

    • 53
    • 75

    Increasing Clouds

    • 51
    • 72

    Partly Sunny

    • 56
    • 76

    Mostly Sunny

    • 53
    • 81

    Mostly Sunny

    • 55
    • 79

    Mostly Sunny

    • 57
    • 81

    Partly Sunny

Today 6 Jul Santa Cruz Mountains

Partly cloudy in the morning then becoming sunny. Areas of fog in the morning. Highs in the lower 60s to mid 70s. Southwest Winds up to 5 Mph.

Tonight 6 Jul Santa Cruz Mountains

Mostly cloudy. Patchy fog. Lows in the 50s. Southwest Winds up to 5 Mph.

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Castle Rock State Park Temperature Statistics

July Temperature

San Jose, San Jose International Airport (13.7 miles)

  • Lowest 3 July, 2026

    55.7 °F

  • Average July

    68 °F

  • Highest 3 July, 2026

    81.6 °F

Climate (2021–2026)

San Jose, San Jose International Airport (13.7 miles)

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  • Average Low 2021–2026

    52.2 °F

  • Average 2021–2026

    62 °F

  • Average High 2021–2026

    72.8 °F
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