Black Diamond Mines Regional Preserve Weather Forecast

    • 71
    • 95

    Increasing Clouds

    • 67
    • 86

    Mostly Cloudy

    • 65
    • 83

    Chance Rain Showers

    • 65
    • 86

    Mostly Sunny

    • 66
    • 89

    Sunny

    • 68
    • 93

    Mostly Sunny

    • 65
    • 82

    Chance Rain Showers

Today 17 Sep East Bay Interior Valleys

Sunny. Highs in the mid 90s. Northwest Winds 5 to 15 Mph.

Tonight 17 Sep East Bay Interior Valleys

Partly cloudy in the evening then becoming mostly cloudy. Lows in the mid 60s. Southwest Winds 5 to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Black Diamond Mines Regional Preserve Temperature Statistics

September Temperature

Concord, Buchanan Field (9.9 miles)

  • Lowest 4 September, 2025

    59 °F

  • Average September

    70.3 °F

  • Highest 1 September, 2025

    99 °F

Climate (2020–Present)

Concord, Buchanan Field (9.9 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    50.8 °F

  • Average 2020–2025

    61.4 °F

  • Average High 2020–2025

    74.6 °F
Get WillyWeather+ to remove ads