Potomac River - Saint Clements Island Weather Forecast

    • 72
    • 79

    Rain Showers

    • 70
    • 79

    Mostly Sunny

    • 73
    • 81

    Mostly Sunny

    • 78
    • 88

    Sunny

    • 80
    • 94

    Mostly Sunny

    • 80
    • 96

    Slight Chance Thunderstorms

Today 28 Jun St. Marys

Mostly cloudy. Patchy fog late this morning. Scattered Showers late this Morning, then numerous Showers and scattered Thunderstorms this afternoon. Highs in the lower 80s. East Winds around 5 Mph. Chance of rain 60 percent.

Tonight 28 Jun St. Marys

Partly cloudy with a chance of Showers and Thunderstorms in the Evening, then mostly cloudy after midnight. Patchy fog after midnight. Lows in the upper 60s. Northeast Winds around 5 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Potomac River - Saint Clements Island Temperature Statistics

June Temperature

St Marys County Airport (12.4 miles)

  • Lowest 3 June, 2026

    50.9 °F

  • Average June

    75.1 °F

  • Highest 12 June, 2026

    100.6 °F

Climate (2021–2026)

St Marys County Airport (12.4 miles)

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  • Average Low 2021–2026

    49.3 °F

  • Average 2021–2026

    58 °F

  • Average High 2021–2026

    66.8 °F
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