Potomac River - Cobb Point Weather Forecast

    • 71
    • 83

    Chance Rain Showers

    • 72
    • 84

    Rain Showers Likely

    • 74
    • 86

    Slight Chance Thunderstorms

    • 69
    • 82

    Mostly Sunny

    • 70
    • 79

    Mostly Sunny

    • 71
    • 84

    Mostly Sunny

Today 11 Sep Charles

Mostly cloudy. A chance of Showers in the morning. Highs in the lower 80s. North Winds around 5 Mph. Chance of rain 50 percent.

Tonight 11 Sep Charles

Showers likely. Lows in the lower 70s. West Winds around 5 Mph. Chance of rain 60 percent.

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  • Temperature Real-Time

Potomac River - Cobb Point Temperature Statistics

September Temperature

St Marys County Airport (16.2 miles)

  • Lowest 8 September, 2026

    59.5 °F

  • Average September

    75.8 °F

  • Highest 1 September, 2026

    93.9 °F

Climate (2021–2026)

St Marys County Airport (16.2 miles)

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  • Average Low 2021–2026

    49.5 °F

  • Average 2021–2026

    58.1 °F

  • Average High 2021–2026

    67 °F
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