Black Diamond Mines Regional Preserve Weather Forecast

    • 56
    • 78

    Increasing Clouds

    • 51
    • 78

    Partly Sunny

    • 54
    • 80

    Mostly Sunny

    • 56
    • 83

    Partly Sunny

    • 55
    • 74

    Chance Rain

    • 52
    • 64

    Rain Likely

Today 26 Mar East Bay Interior Valleys

Partly cloudy. Highs in the upper 70s. North Winds 10 to 15 Mph.

Tonight 26 Mar East Bay Interior Valleys

Mostly cloudy. Lows in the lower 50s. Northwest Winds 5 to 10 Mph. Becoming southwest after midnight.

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  • Temperature Real-Time

Black Diamond Mines Regional Preserve Temperature Statistics

March Temperature

Concord, Buchanan Field (9.9 miles)

  • Lowest 5 March, 2026

    40.6 °F

  • Average March

    64.5 °F

  • Highest 20 March, 2026

    89.7 °F

Climate (2021–Present)

Concord, Buchanan Field (9.9 miles)

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  • Average Low 2021–2026

    51 °F

  • Average 2021–2026

    61.4 °F

  • Average High 2021–2026

    74.4 °F
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