Mount Diablo State Park Weather Forecast

    • 55
    • 72

    Becoming Sunny

    • 53
    • 64

    Sunny

    • 57
    • 73

    Sunny

    • 56
    • 79

    Sunny

    • 54
    • 69

    Sunny

    • 54
    • 67

    Sunny

Today 15 Jun East Bay Hills

Partly cloudy in the morning then becoming sunny. Highs around 80. Southwest Winds around 10 Mph.

Tonight 15 Jun East Bay Hills

Mostly clear. Lows around 50. Southwest Winds 10 to 20 Mph.

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Mount Diablo State Park Temperature Statistics

June Temperature

Concord, Buchanan Field (10.6 miles)

  • Lowest 11 June, 2025

    53.1 °F

  • Average June

    66 °F

  • Highest 4 June, 2025

    85.6 °F

Climate (2020–Present)

Concord, Buchanan Field (10.6 miles)

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  • Average Low 2020–2025

    50.8 °F

  • Average 2020–2025

    61.5 °F

  • Average High 2020–2025

    74.7 °F
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