Potomac River - Alexandria Weather Forecast

    • 74
    • 88

    Thunderstorms Likely

    • 72
    • 93

    Chance Thunderstorms

    • 68
    • 86

    Mostly Sunny

    • 69
    • 84

    Partly Sunny

    • 72
    • 87

    Partly Sunny

    • 76
    • 92

    Slight Chance Thunderstorms

Today 19 Jul Arlington/Falls Church/Alexandria

Patchy fog in the morning. Partly sunny with a slight chance of Showers in the Morning, then mostly cloudy with Showers likely with a chance of Thunderstorms in the afternoon. Highs in the mid 80s. Southeast Winds around 5 Mph, becoming southwest around 5 Mph in the afternoon. Chance of rain 60 percent.

Tonight 19 Jul Arlington/Falls Church/Alexandria

Mostly cloudy with a 30 percent chance of Showers. Lows in the mid 70s. Light and variable Winds.

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Potomac River - Alexandria Temperature Statistics

July Temperature

Washington/Reagan National Airport, DC (2.5 miles)

  • Lowest 5 July, 2025

    69.7 °F

  • Average July

    81.3 °F

  • Highest 8 July, 2025

    95.6 °F

Climate (2020–Present)

Washington/Reagan National Airport, DC (2.5 miles)

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  • Average Low 2020–2025

    52.7 °F

  • Average 2020–2025

    60.5 °F

  • Average High 2020–2025

    69.2 °F
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