Potomac River - Saint Patricks Creek Entrance Weather Forecast

    • 65
    • 78

    Chance Rain Showers

    • 65
    • 70

    Rain Showers

    • 66
    • 71

    Rain Showers Likely

    • 65
    • 75

    Partly Sunny

    • 66
    • 82

    Mostly Sunny

    • 64
    • 77

    Mostly Cloudy

Today 15 Sep St. Marys

Partly sunny. Highs in the upper 70s. Northeast Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 15 Sep St. Marys

Mostly cloudy. A chance of Showers with a slight chance of Thunderstorms after midnight. Lows in the lower 60s. Northeast Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 50 percent.

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  • Temperature Real-Time

Potomac River - Saint Patricks Creek Entrance Temperature Statistics

September Temperature

St Marys County Airport (11.8 miles)

  • Lowest 3 September, 2025

    53.2 °F

  • Average September

    68.4 °F

  • Highest 4 September, 2025

    86.9 °F

Climate (2020–Present)

St Marys County Airport (11.8 miles)

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  • Average Low 2020–2025

    49.6 °F

  • Average 2020–2025

    58.1 °F

  • Average High 2020–2025

    66.7 °F
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