Mount Diablo State Park Weather Forecast

    • 54
    • 64

    Mostly Sunny

    • 56
    • 70

    Sunny

    • 60
    • 73

    Mostly Sunny

    • 61
    • 74

    Mostly Sunny

    • 63
    • 76

    Mostly Sunny

    • 60
    • 73

    Mostly Sunny

Today 20 Jun East Bay Hills

Sunny. Highs in the mid 70s. Southwest Winds 10 to 15 Mph.

Tonight 20 Jun East Bay Hills

Mostly clear. Lows in the lower 50s. Southwest Winds around 15 Mph with Gusts to around 30 Mph.

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Mount Diablo State Park Temperature Statistics

June Temperature

Concord, Buchanan Field (10.6 miles)

  • Lowest 7 June, 2026

    53.7 °F

  • Average June

    72.2 °F

  • Highest 11 June, 2026

    101.6 °F

Climate (2021–2026)

Concord, Buchanan Field (10.6 miles)

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  • Average Low 2021–2026

    51 °F

  • Average 2021–2026

    61.5 °F

  • Average High 2021–2026

    74.3 °F
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