Diablo Shadows Weather Forecast

    • 54
    • 77

    Increasing Clouds

    • 53
    • 73

    Gradual Clearing

    • 56
    • 83

    Mostly Sunny

    • 59
    • 95

    Sunny

    • 58
    • 96

    Mostly Sunny

    • 58
    • 91

    Mostly Sunny

    • 59
    • 92

    Mostly Sunny

Today 26 Sep East Bay Interior Valleys

Sunny. Highs in the upper 70s. West Winds 5 to 10 Mph.

Tonight 26 Sep East Bay Interior Valleys

Mostly cloudy. Lows in the mid 50s. Southwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Diablo Shadows Temperature Statistics

September Temperature

Concord, Buchanan Field (5 miles)

  • Lowest 23 September, 2026

    53.7 °F

  • Average September

    71.4 °F

  • Highest 9 September, 2026

    101.6 °F

Climate (2021–2026)

Concord, Buchanan Field (5 miles)

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  • Average Low 2021–2026

    51.1 °F

  • Average 2021–2026

    61.6 °F

  • Average High 2021–2026

    74.2 °F
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