Potomac River - Alexandria Weather Forecast

    • 28
    • 40

    Increasing Clouds

    • 28
    • 39

    Mostly Cloudy

    • 27
    • 46

    Rain/Snow

    • 19
    • 31

    Chance Snow

    • 20
    • 33

    Partly Sunny

    • 26
    • 39

    Partly Sunny

    • 36
    • 47

    Mostly Cloudy

Today 11 Dec Arlington/Falls Church/Alexandria

Sunny. Highs in the upper 30s. West Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 11 Dec Arlington/Falls Church/Alexandria

Mostly cloudy. Lows in the upper 20s. West Winds around 5 Mph.

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Potomac River - Alexandria Temperature Statistics

December Temperature

Washington/Reagan National Airport, DC (2.5 miles)

  • Lowest 9 December, 2025

    21 °F

  • Average December

    34.9 °F

  • Highest 1 December, 2025

    46 °F

Climate (2020–Present)

Washington/Reagan National Airport, DC (2.5 miles)

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  • Average Low 2020–2025

    52.5 °F

  • Average 2020–2025

    60.4 °F

  • Average High 2020–2025

    69.1 °F
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