National Harbor Weather Forecast

    • 41
    • 56

    Decreasing Clouds

    • 43
    • 59

    Mostly Cloudy

    • 61
    • 70

    Rain Showers Likely

    • 47
    • 75

    Rain Showers

    • 39
    • 58

    Mostly Sunny

    • 49
    • 67

    Partly Sunny

    • 52
    • 76

    Mostly Cloudy

Today 13 Mar Arlington/Falls Church/Alexandria

Mostly cloudy. Highs in the upper 50s. Northeast Winds 5 to 10 Mph.

Tonight 13 Mar Arlington/Falls Church/Alexandria

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the lower 40s. Northeast Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

National Harbor Temperature Statistics

March Temperature

Washington/Reagan National Airport, DC (4.3 miles)

  • Lowest 2 March, 2025

    23.8 °F

  • Average March

    48.1 °F

  • Highest 11 March, 2025

    72 °F

Climate (2020–Present)

Washington/Reagan National Airport, DC (4.3 miles)

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  • Average Low 2020–2025

    52.5 °F

  • Average 2020–2025

    60.2 °F

  • Average High 2020–2025

    68.9 °F
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