Patapsco River - Fort McHenry Marsh Weather Forecast

    • 46
    • 64

    Increasing Clouds

    • 49
    • 78

    Mostly Cloudy

    • 33
    • 57

    Chance Rain

    • 38
    • 50

    Partly Sunny

    • 41
    • 58

    Mostly Cloudy

    • 47
    • 61

    Chance Rain

Today 21 Mar Southern Baltimore

Mostly sunny. Highs in the lower 60s. North Winds 5 to 10 Mph.

Tonight 21 Mar Southern Baltimore

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the mid 40s. East Winds around 5 Mph, becoming southeast after midnight.

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  • Temperature Real-Time

Patapsco River - Fort McHenry Marsh Temperature Statistics

March Temperature

Baltimore, Inner Harbor (1.9 miles)

  • Lowest 18 March, 2026

    27 °F

  • Average March

    48.3 °F

  • Highest 10 March, 2026

    80.1 °F

Climate (2022–Present)

Baltimore, Inner Harbor (1.9 miles)

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  • Average Low 2022–2026

    52.7 °F

  • Average 2022–2026

    59.8 °F

  • Average High 2022–2026

    67.4 °F
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