Potomac River - Breton Beach Weather Forecast

    • 55
    • 69

    Mostly Sunny

    • 55
    • 75

    Rain Showers

    • 52
    • 68

    Partly Sunny

    • 55
    • 70

    Partly Sunny

    • 63
    • 81

    Mostly Sunny

    • 64
    • 86

    Mostly Sunny

Today 12 May St. Marys

Sunny. Highs in the upper 60s. North Winds around 5 Mph, becoming southeast in the afternoon.

Tonight 12 May St. Marys

Mostly clear. Lows in the mid 50s. South Winds 10 to 15 Mph.

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  • Temperature Real-Time

Potomac River - Breton Beach Temperature Statistics

May Temperature

St Marys County Airport (8.7 miles)

  • Lowest 1 May, 2026

    39.9 °F

  • Average May

    59.4 °F

  • Highest 5 May, 2026

    83.7 °F

Climate (2021–Present)

St Marys County Airport (8.7 miles)

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  • Average Low 2021–2026

    49.3 °F

  • Average 2021–2026

    57.9 °F

  • Average High 2021–2026

    66.7 °F
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