Potomac River - Breton Beach Weather Forecast

    • 74
    • 90

    Partly Sunny

    • 71
    • 86

    Chance Rain Showers

    • 73
    • 86

    Partly Sunny

    • 77
    • 89

    Chance Thunderstorms

    • 74
    • 89

    Chance Rain Showers

    • 73
    • 85

    Partly Sunny

Today 13 Aug St. Marys

Mostly sunny. Highs in the upper 80s. Northwest Winds around 5 Mph.

Tonight 13 Aug St. Marys

Partly cloudy. Lows in the mid 70s. West Winds around 5 Mph, becoming north after midnight.

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  • Temperature Real-Time

Potomac River - Breton Beach Temperature Statistics

August Temperature

St Marys County Airport (8.7 miles)

  • Lowest 1 August, 2026

    69.1 °F

  • Average August

    80 °F

  • Highest 9 August, 2026

    92.3 °F

Climate (2021–2026)

St Marys County Airport (8.7 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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