Mount Diablo State Park Weather Forecast

    • 38
    • 50

    Mostly Sunny

    • 39
    • 50

    Mostly Sunny

    • 37
    • 49

    Mostly Sunny

    • 37
    • 50

    Mostly Sunny

    • 38
    • 51

    Mostly Sunny

    • 39
    • 53

    Mostly Sunny

    • 39
    • 53

    Mostly Sunny

Today 17 Jan East Bay Hills

Sunny. Highs in the mid 50s. Southwest Winds around 5 Mph.

Tonight 17 Jan East Bay Hills

Mostly clear. Lows around 40. Southwest Winds around 5 Mph in the evening. Becoming light.

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Mount Diablo State Park Temperature Statistics

January Temperature

Concord, Buchanan Field (10.6 miles)

  • Lowest 15 January, 2025

    35.1 °F

  • Average January

    51.9 °F

  • Highest 9 January, 2025

    73.7 °F

Climate (2020–Present)

Concord, Buchanan Field (10.6 miles)

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  • Average Low 2020–2025

    51 °F

  • Average 2020–2025

    61.6 °F

  • Average High 2020–2025

    74.7 °F
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