National Harbor Weather Forecast

    • 41
    • 65

    Increasing Clouds

    • 43
    • 58

    Mostly Cloudy

    • 47
    • 60

    Mostly Cloudy

    • 64
    • 75

    Rain Showers

    • 49
    • 76

    Rain Showers

    • 39
    • 59

    Chance Rain Showers

Today 12 Mar Arlington/Falls Church/Alexandria

Mostly sunny. Highs in the mid 60s. Northeast Winds 5 to 10 Mph, becoming east this afternoon.

Tonight 12 Mar Arlington/Falls Church/Alexandria

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the lower 40s. East 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

    46.6 °F

  • Highest 1 March, 2025

    69.7 °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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