Potomac River - Calvert Bay Weather Forecast

    • 41
    • 53

    Increasing Clouds

    • 45
    • 51

    Mostly Cloudy

    • 55
    • 64

    Chance Rain Showers

    • 48
    • 68

    Rain Showers

    • 41
    • 56

    Slight Chance Rain Showers

    • 49
    • 61

    Mostly Sunny

    • 51
    • 66

    Partly Sunny

Today 13 Mar St. Marys

Partly sunny. Highs in the lower 50s. Northeast Winds 5 to 10 Mph.

Tonight 13 Mar St. Marys

Mostly cloudy. Patchy fog after midnight. Lows in the lower 40s. Northeast Winds 5 to 10 Mph.

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Potomac River - Calvert Bay Temperature Statistics

March Temperature

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

  • Lowest 2 March, 2025

    24.8 °F

  • Average March

    46.2 °F

  • Highest 1 March, 2025

    69.7 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    52.5 °F

  • Average 2020–2025

    60.8 °F

  • Average High 2020–2025

    69.3 °F
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