Potomac River - Calvert Bay Weather Forecast

    • 24
    • 32

    Increasing Clouds

    • 34
    • 45

    Partly Sunny

    • 28
    • 43

    Partly Sunny

    • 25
    • 38

    Mostly Cloudy

    • 25
    • 36

    Slight Chance Rain/Snow

    • 29
    • 39

    Chance Wintry Mix

Today 9 Feb St. Marys

Sunny. Highs in the lower 30s. Northwest Winds 5 to 10 Mph.

Tonight 9 Feb St. Marys

Mostly clear. Cold with Lows around 12. Northwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

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Potomac River - Calvert Bay Temperature Statistics

February Temperature

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

  • Lowest 6 February, 2026

    18 °F

  • Average February

    27.3 °F

  • Highest 5 February, 2026

    32 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    52 °F

  • Average 2021–2026

    60.5 °F

  • Average High 2021–2026

    68.9 °F
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