Potomac River - Saint Margaret Island Weather Forecast

    • 59
    • 60

    Rain Showers

    • 63
    • 70

    Rain Showers

    • 63
    • 73

    Rain Showers Likely

    • 64
    • 72

    Chance Rain Showers

    • 65
    • 77

    Chance Thunderstorms

    • 62
    • 75

    Chance Rain Showers

Today 23 May St. Marys

Showers with a slight chance of Thunderstorms. Highs around 60. East Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain near 100 percent.

Tonight 23 May St. Marys

Showers with a slight chance of Thunderstorms. Lows in the upper 50s. East Winds 10 to 15 Mph, Diminishing to around 5 Mph after midnight. Chance of rain near 100 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Potomac River - Saint Margaret Island Temperature Statistics

May Temperature

St Marys County Airport (14.3 miles)

  • Lowest 1 May, 2026

    39.9 °F

  • Average May

    64.4 °F

  • Highest 19 May, 2026

    95.2 °F

Climate (2021–Present)

St Marys County Airport (14.3 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    49.3 °F

  • Average 2021–2026

    58 °F

  • Average High 2021–2026

    66.8 °F
Get WillyWeather+ to remove ads