Potomac River - Old Breton Beach Weather Forecast

    • 57
    • 67

    Sunny

    • 67
    • 74

    Partly Sunny

    • 64
    • 77

    Chance Rain Showers

    • 68
    • 75

    Chance Rain Showers

    • 61
    • 78

    Chance Thunderstorms

    • 52
    • 67

    Mostly Sunny

Today 28 Apr St. Marys

Sunny. Highs in the lower 70s. Northeast Winds around 5 Mph, becoming south this afternoon.

Tonight 28 Apr St. Marys

Mostly clear. Lows in the lower 50s. South Winds 5 to 10 Mph.

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Potomac River - Old Breton Beach Temperature Statistics

April Temperature

St Marys County Airport (8.7 miles)

  • Lowest 9 April, 2025

    33.8 °F

  • Average April

    57 °F

  • Highest 19 April, 2025

    82.4 °F

Climate (2020–Present)

St Marys County Airport (8.7 miles)

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  • Average Low 2020–2025

    49.4 °F

  • Average 2020–2025

    57.9 °F

  • Average High 2020–2025

    66.5 °F
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