Mount Diablo State Park Weather Forecast

    • 49
    • 75

    Mostly Sunny

    • 47
    • 60

    Slight Chance Rain

    • 45
    • 52

    Chance Rain

    • 39
    • 50

    Slight Chance Rain

    • 42
    • 51

    Rain Likely

    • 44
    • 49

    Rain Likely

    • 43
    • 51

    Chance Rain

Today 25 Mar East Bay Hills

Sunny late in the morning then becoming partly cloudy. Highs in the lower 80s. Northeast Winds around 5 Mph.

Tonight 25 Mar East Bay Hills

Mostly clear. Lows in the lower 50s. West Winds 5 to 10 Mph.

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Mount Diablo State Park Temperature Statistics

March Temperature

Concord, Buchanan Field (10.6 miles)

  • Lowest 7 March, 2025

    39.7 °F

  • Average March

    53.6 °F

  • Highest 23 March, 2025

    75 °F

Climate (2020–Present)

Concord, Buchanan Field (10.6 miles)

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  • Average Low 2020–2025

    50.9 °F

  • Average 2020–2025

    61.5 °F

  • Average High 2020–2025

    74.7 °F
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