Potomac River - Dangerfield Island Weather Forecast

    • 30
    • 55

    Increasing Clouds

    • 11
    • 45

    Mostly Cloudy

    • 17
    • 21

    Mostly Cloudy

    • 20
    • 25

    Wintry Mix Likely

    • 6
    • 27

    Partly Sunny

    • 9
    • 24

    Partly Sunny

    • 14
    • 28

    Mostly Cloudy

Today 22 Jan Arlington/Falls Church/Alexandria

Mostly sunny. Highs in the mid 50s. West Winds 10 to 15 Mph.

Tonight 22 Jan Arlington/Falls Church/Alexandria

Partly cloudy in the Evening, then clearing. Lows around 30. Northwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Potomac River - Dangerfield Island Temperature Statistics

January Temperature

Washington/Reagan National Airport, DC (1.2 miles)

  • Lowest 20 January, 2026

    19.9 °F

  • Average January

    38 °F

  • Highest 7 January, 2026

    63 °F

Climate (2021–Present)

Washington/Reagan National Airport, DC (1.2 miles)

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  • Average Low 2021–2026

    52.5 °F

  • Average 2021–2026

    60.3 °F

  • Average High 2021–2026

    69.1 °F
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