Potomac River - Calvert Bay Weather Forecast

    • 34
    • 50

    Becoming Sunny

    • 47
    • 57

    Partly Sunny

    • 54
    • 67

    Partly Sunny

    • 60
    • 73

    Mostly Sunny

    • 50
    • 75

    Chance Rain

    • 46
    • 58

    Chance Rain

Today 28 Mar St. Marys

Sunny. Highs around 50. North Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 28 Mar St. Marys

Clear. Lows in the lower 30s. North Winds 5 to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Potomac River - Calvert Bay Temperature Statistics

March Temperature

St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity (3.1 miles)

  • Lowest 18 March, 2026

    28.9 °F

  • Average March

    51.8 °F

  • Highest 11 March, 2026

    82 °F

Climate (2021–Present)

St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity (3.1 miles)

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

  • Average Low 2021–2026

    52 °F

  • Average 2021–2026

    60.5 °F

  • Average High 2021–2026

    68.9 °F
Get WillyWeather+ to remove ads