Potomac River - Saint Margaret Island Weather Forecast

    • 42
    • 51

    Partly Sunny

    • 38
    • 50

    Chance Rain

    • 36
    • 52

    Chance Rain

    • 41
    • 43

    Rain/Sleet

    • 45
    • 49

    Mostly Cloudy

    • 30
    • 57

    Chance Rain

Today 23 Dec St. Marys

Mostly sunny. Highs in the lower 50s. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 23 Dec St. Marys

Partly cloudy in the Evening, then clearing. Lows in the upper 30s. West Winds 5 to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Potomac River - Saint Margaret Island Temperature Statistics

December Temperature

St Marys County Airport (14.3 miles)

  • Lowest 15 December, 2025

    14.9 °F

  • Average December

    36.1 °F

  • Highest 19 December, 2025

    59.4 °F

Climate (2020–Present)

St Marys County Airport (14.3 miles)

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

  • Average Low 2020–2025

    49.5 °F

  • Average 2020–2025

    58 °F

  • Average High 2020–2025

    66.7 °F
Get WillyWeather+ to remove ads