Castle Rock Weather Forecast

    • 57
    • 63

    Increasing Clouds

    • 57
    • 62

    Partly Sunny

    • 56
    • 62

    Mostly Cloudy

    • 56
    • 61

    Mostly Cloudy

    • 57
    • 61

    Mostly Cloudy

    • 56
    • 61

    Partly Sunny

Today 22 Aug Southern Monterey Bay and Big Sur Coast

Partly cloudy. Highs in the mid 70s to lower 90s. Northwest Winds 5 to 15 Mph.

Tonight 22 Aug Southern Monterey Bay and Big Sur Coast

Partly cloudy. Lows in the upper 50s. Northwest Winds 5 to 15 Mph.

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Castle Rock Temperature Statistics

August Temperature

Monterey Regional Airport (14.9 miles)

  • Lowest 20 August, 2025

    54 °F

  • Average August

    63 °F

  • Highest 16 August, 2025

    74.6 °F

Climate (2020–Present)

Monterey Regional Airport (14.9 miles)

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  • Average Low 2020–2025

    50.2 °F

  • Average 2020–2025

    57.1 °F

  • Average High 2020–2025

    65 °F
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