Potomac River - McKays Beach Weather Forecast

    • 65
    • 77

    Chance Rain Showers

    • 65
    • 70

    Rain Showers

    • 66
    • 72

    Rain Showers Likely

    • 64
    • 75

    Partly Sunny

    • 65
    • 81

    Mostly Sunny

    • 64
    • 77

    Partly Sunny

Today 15 Sep St. Marys

Partly sunny. Highs in the upper 70s. Northeast Winds 10 to 15 Mph.

Tonight 15 Sep St. Marys

Partly cloudy. Lows in the lower 60s. Northeast Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Potomac River - McKays Beach Temperature Statistics

September Temperature

St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity (7.5 miles)

  • Lowest 1 September, 2025

    55 °F

  • Average September

    69.7 °F

  • Highest 6 September, 2025

    89.1 °F

Climate (2020–Present)

St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity (7.5 miles)

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

  • Average Low 2020–2025

    52.3 °F

  • Average 2020–2025

    60.7 °F

  • Average High 2020–2025

    69.2 °F
Get WillyWeather+ to remove ads