Mount Diablo State Park Weather Forecast

    • 70
    • 77

    Mostly Sunny

    • 74
    • 88

    Breezy

    • 73
    • 91

    Hot

    • 71
    • 86

    Sunny

    • 70
    • 83

    Sunny

    • 68
    • 83

    Mostly Sunny

Today 26 Sep East Bay Hills and the Diablo Range

Sunny. Highs in the upper 70s to mid 80s. Northwest Winds 10 to 20 Mph.

Tonight 26 Sep East Bay Hills and the Diablo Range

Mostly clear. Breezy. Lows in the 60s. Northwest Winds 10 to 20 Mph with Gusts to around 35 Mph increasing to 20 to 30 Mph with Gusts to around 50 Mph after midnight.

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  • Temperature Forecast NOAA

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Mount Diablo State Park Temperature Statistics

September Temperature

Concord, Buchanan Field (10.6 miles)

  • Lowest 10 September, 2020

    57 °F
  • Average September

    71.5 °F
  • Highest 7 September, 2020

    111.9 °F

Climate (2010–Present)

Concord, Buchanan Field (10.6 miles)

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  • Average Low 2010–Present

    52.3 °F
  • Average 2010–Present

    62.5 °F
  • Average High 2010–Present

    75.4 °F
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