Arlington Weather Forecast

    • 20
    • 30

    Partly Sunny

    • 28
    • 38

    Mostly Sunny

    • 30
    • 49

    Mostly Cloudy

    • 38
    • 54

    Mostly Cloudy

    • 26
    • 45

    Partly Sunny

    • 38
    • 44

    Mostly Cloudy

Today 15 Dec Arlington/Falls Church/Alexandria

Partly sunny. Highs around 30. West Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 15 Dec Arlington/Falls Church/Alexandria

Partly cloudy in the Evening, then clearing. Lows around 19. Southwest Winds around 5 Mph.

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Arlington Temperature Statistics

December Temperature

Washington/Reagan National Airport, DC (4.3 miles)

  • Lowest 9 December, 2025

    21 °F

  • Average December

    35.5 °F

  • Highest 1 December, 2025

    46 °F

Climate (2020–Present)

Washington/Reagan National Airport, DC (4.3 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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