Potomac River - Dangerfield Island Weather Forecast

    • 71
    • 84

    Chance Thunderstorms

    • 72
    • 83

    Rain Showers Likely

    • 72
    • 87

    Rain Showers

    • 73
    • 90

    Chance Thunderstorms

    • 70
    • 87

    Chance Thunderstorms

    • 69
    • 85

    Chance Rain Showers

Today 7 Jul Arlington/Falls Church/Alexandria

Mostly cloudy with scattered Showers and Thunderstorms. Highs in the mid 80s. Northeast Winds around 5 Mph. Chance of rain 50 percent.

Tonight 7 Jul Arlington/Falls Church/Alexandria

Mostly cloudy. Numerous Showers and scattered Thunderstorms in the Evening, then scattered Showers with isolated Thunderstorms after midnight. Patchy fog after midnight. Lows in the lower 70s. East Winds around 5 Mph. Chance of rain 60 percent.

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Potomac River - Dangerfield Island Temperature Statistics

July Temperature

Washington/Reagan National Airport, DC (1.2 miles)

  • Lowest 1 July, 2026

    75.7 °F

  • Average July

    89.4 °F

  • Highest 4 July, 2026

    103.6 °F

Climate (2021–2026)

Washington/Reagan National Airport, DC (1.2 miles)

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  • Average Low 2021–2026

    52.4 °F

  • Average 2021–2026

    60.4 °F

  • Average High 2021–2026

    69.3 °F
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