Contra Loma Reservoir Regional Park Weather Forecast

    • 67
    • 90

    Chance Rain Showers

    • 65
    • 83

    Chance Rain Showers

    • 65
    • 87

    Sunny

    • 67
    • 89

    Sunny

    • 69
    • 95

    Mostly Sunny

    • 67
    • 87

    Chance Rain Showers

Today 18 Sep East Bay Interior Valleys

Mostly cloudy. A slight chance of Showers. Isolated Thunderstorms in the afternoon. Highs in the mid 80s to lower 90s. Southwest Winds 5 to 10 Mph.

Tonight 18 Sep East Bay Interior Valleys

Mostly cloudy. Isolated Thunderstorms in the evening. A chance of Showers. Lows in the mid 60s. West Winds 5 to 10 Mph in the evening. Becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Contra Loma Reservoir Regional Park Temperature Statistics

September Temperature

Concord, Buchanan Field (12.4 miles)

  • Lowest 4 September, 2025

    59 °F

  • Average September

    70.7 °F

  • Highest 1 September, 2025

    99 °F

Climate (2020–Present)

Concord, Buchanan Field (12.4 miles)

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  • Average Low 2020–2025

    50.8 °F

  • Average 2020–2025

    61.4 °F

  • Average High 2020–2025

    74.6 °F
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