Potomac River - Port Sunlight Beach Weather Forecast

    • 52
    • 74

    Rain Showers Likely

    • 48
    • 63

    Mostly Sunny

    • 56
    • 65

    Mostly Cloudy

    • 60
    • 68

    Mostly Cloudy

    • 54
    • 64

    Slight Chance Rain Showers

    • 56
    • 63

    Partly Sunny

Today 8 Oct St. Marys

Mostly sunny. Highs in the mid 70s. North Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 8 Oct St. Marys

Clear. Lows in the lower 50s. North Winds 10 to 15 Mph with Gusts up to 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Potomac River - Port Sunlight Beach Temperature Statistics

October Temperature

St Marys County Airport (11.8 miles)

  • Lowest 3 October, 2025

    47.1 °F

  • Average October

    63 °F

  • Highest 6 October, 2025

    80.2 °F

Climate (2020–Present)

St Marys County Airport (11.8 miles)

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  • Average Low 2020–2025

    49.7 °F

  • Average 2020–2025

    58.2 °F

  • Average High 2020–2025

    66.8 °F
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