Castle Rock Park Weather Forecast

    • 55
    • 77

    Mostly Sunny

    • 56
    • 80

    Mostly Sunny

    • 55
    • 80

    Partly Sunny

    • 54
    • 80

    Mostly Sunny

    • 55
    • 83

    Mostly Sunny

    • 57
    • 86

    Mostly Sunny

Today 1 Sep East Bay Interior Valleys

Partly cloudy. Highs in the mid 70s. Southwest Winds 5 to 10 Mph. Becoming west 10 to 20 Mph in the afternoon.

Tonight 1 Sep East Bay Interior Valleys

Mostly clear in the evening then becoming partly cloudy. Lows in the mid 50s. West Winds 10 to 20 Mph in the evening. Becoming light.

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Castle Rock Park Temperature Statistics

September Temperature

Concord, Buchanan Field (7.5 miles)

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  • Average September

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Climate (2021–2026)

Concord, Buchanan Field (7.5 miles)

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  • Average Low 2021–2026

    51 °F

  • Average 2021–2026

    61.6 °F

  • Average High 2021–2026

    74.3 °F
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