Potomac River - Belle Haven Marina Weather Forecast

    • 48
    • 65

    Chance Rain Showers

    • 53
    • 71

    Partly Sunny

    • 55
    • 74

    Rain Showers Likely

    • 58
    • 81

    Rain Showers Likely

    • 48
    • 70

    Mostly Sunny

    • 53
    • 69

    Partly Sunny

Today 7 May Arlington/Falls Church/Alexandria

Cloudy in the Morning, then becoming partly sunny. A 30 percent chance of Showers. Highs in the mid 60s. Northwest Winds 5 to 10 Mph.

Tonight 7 May Arlington/Falls Church/Alexandria

Cloudy with a 50 percent chance of Showers. Lows in the lower 50s. North Winds 5 to 10 Mph.

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  • Temperature Real-Time

Potomac River - Belle Haven Marina Temperature Statistics

May Temperature

Washington/Reagan National Airport, DC (5 miles)

  • Lowest 1 May, 2026

    44.7 °F

  • Average May

    57.8 °F

  • Highest 4 May, 2026

    77 °F

Climate (2021–Present)

Washington/Reagan National Airport, DC (5 miles)

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  • Average Low 2021–2026

    52.4 °F

  • Average 2021–2026

    60.3 °F

  • Average High 2021–2026

    69.2 °F
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