Potomac River - Shipping Point Weather Forecast

    • 73
    • 86

    Rain Showers Likely

    • 74
    • 87

    Slight Chance Rain Showers

    • 76
    • 87

    Rain Showers Likely

    • 75
    • 90

    Chance Rain Showers

    • 73
    • 85

    Mostly Sunny

    • 76
    • 86

    Mostly Sunny

    • 74
    • 88

    Chance Rain Showers

Today 14 Aug Charles

Mostly cloudy with a chance of Showers and Thunderstorms. Highs in the mid 80s. North Winds around 5 Mph. Chance of rain 50 percent.

Tonight 14 Aug Charles

Mostly cloudy with scattered Thunderstorms with a chance of Showers this Evening, then partly cloudy after midnight. Lows around 70. North Winds around 5 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Potomac River - Shipping Point Temperature Statistics

August Temperature

St Marys County Airport (15.5 miles)

  • Lowest 1 August, 2026

    69.1 °F

  • Average August

    79.8 °F

  • Highest 9 August, 2026

    92.3 °F

Climate (2021–2026)

St Marys County Airport (15.5 miles)

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  • Average Low 2021–2026

    49.4 °F

  • Average 2021–2026

    58.1 °F

  • Average High 2021–2026

    66.9 °F
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