Chesapeake Bay - Flag Harbor Weather Forecast

    • 31
    • 40

    Increasing Clouds

    • 33
    • 44

    Mostly Sunny

    • 41
    • 49

    Partly Sunny

    • 39
    • 57

    Partly Sunny

    • 42
    • 53

    Chance Rain

    • 39
    • 53

    Chance Rain

Today 22 Feb Calvert

Sunny in the Morning, then becoming partly sunny. Highs in the lower 40s. Northwest Winds around 5 Mph, becoming southwest around 5 Mph in the afternoon.

Tonight 22 Feb Calvert

Clear. Lows in the lower 20s. Northwest Winds 5 to 10 Mph.

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Chesapeake Bay - Flag Harbor Temperature Statistics

February Temperature

St Marys County Airport (10.6 miles)

  • Lowest 19 February, 2025

    21.2 °F

  • Average February

    37.2 °F

  • Highest 4 February, 2025

    62.6 °F

Climate (2020–Present)

St Marys County Airport (10.6 miles)

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  • Average Low 2020–2025

    49.5 °F

  • Average 2020–2025

    57.9 °F

  • Average High 2020–2025

    66.5 °F
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