Potomac River - Bullock Island Weather Forecast

    • 77
    • 86

    Slight Chance Thunderstorms

    • 79
    • 88

    Slight Chance Thunderstorms

    • 80
    • 89

    Partly Sunny

    • 80
    • 90

    Partly Sunny

    • 78
    • 90

    Chance Rain Showers

    • 74
    • 86

    Chance Rain Showers

Today 30 Aug St. Marys

Mostly sunny. A slight chance of Showers and Thunderstorms in the afternoon. Highs in the upper 80s. South Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 30 Aug St. Marys

Mostly clear. Lows in the mid 70s. South Winds 5 to 10 Mph.

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  • Temperature Real-Time

Potomac River - Bullock Island Temperature Statistics

August Temperature

St Marys County Airport (13.7 miles)

  • Lowest 24 August, 2026

    60.4 °F

  • Average August

    77.9 °F

  • Highest 9 August, 2026

    92.3 °F

Climate (2021–2026)

St Marys County Airport (13.7 miles)

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  • Average Low 2021–2026

    49.4 °F

  • Average 2021–2026

    58.1 °F

  • Average High 2021–2026

    66.9 °F
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