Potomac River - Hog Island Weather Forecast

    • 17
    • 34

    Becoming Sunny

    • 21
    • 31

    Partly Sunny

    • 27
    • 38

    Partly Sunny

    • 31
    • 49

    Mostly Cloudy

    • 39
    • 55

    Rain Likely

    • 25
    • 49

    Partly Sunny

    • 37
    • 43

    Mostly Cloudy

Today 14 Dec Arlington/Falls Church/Alexandria

Mostly sunny and brisk. Highs in the lower 30s. Temperature falling into the lower 20s late. Northwest Winds 20 to 25 Mph.

Tonight 14 Dec Arlington/Falls Church/Alexandria

Mostly clear. Lows around 17. Northwest Winds 15 to 20 Mph. Gusts up to 40 Mph, decreasing to 30 Mph after midnight.

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Potomac River - Hog Island Temperature Statistics

December Temperature

Washington/Reagan National Airport, DC (6.2 miles)

  • Lowest 9 December, 2025

    21 °F

  • Average December

    35.4 °F

  • Highest 1 December, 2025

    46 °F

Climate (2020–Present)

Washington/Reagan National Airport, DC (6.2 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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