Potomac River - Saint George Island Beach Weather Forecast

    • 68
    • 83

    Slight Chance Thunderstorms

    • 73
    • 86

    Mostly Sunny

    • 65
    • 86

    Rain Showers Likely

    • 61
    • 72

    Slight Chance Rain Showers

    • 61
    • 73

    Mostly Sunny

    • 61
    • 74

    Partly Sunny

    • 61
    • 75

    Partly Sunny

Today 4 Sep St. Marys

Sunny. Highs in the mid 80s. South Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 4 Sep St. Marys

Mostly cloudy with a chance of Thunderstorms with a slight chance of Showers in the Evening, then partly cloudy after midnight. Lows in the mid 60s. South Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 40 percent.

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Potomac River - Saint George Island Beach Temperature Statistics

September Temperature

St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity (3.7 miles)

  • Lowest 1 September, 2025

    55 °F

  • Average September

    69.6 °F

  • Highest 1 September, 2025

    75.9 °F

Climate (2020–Present)

St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity (3.7 miles)

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  • Average Low 2020–2025

    52.3 °F

  • Average 2020–2025

    60.7 °F

  • Average High 2020–2025

    69.2 °F
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