Potomac River - Dangerfield Island Weather Forecast

    • 44
    • 48

    Decreasing Clouds

    • 36
    • 58

    Mostly Sunny

    • 47
    • 55

    Mostly Cloudy

    • 56
    • 66

    Rain

    • 48
    • 65

    Rain Likely

    • 32
    • 52

    Slight Chance Rain

    • 31
    • 45

    Partly Sunny

Today 6 Jan Arlington/Falls Church/Alexandria

Cloudy. Highs in the upper 40s. South Winds around 5 Mph.

Tonight 6 Jan Arlington/Falls Church/Alexandria

Mostly cloudy. Lows in the lower 40s. Southwest Winds around 5 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 1 January, 2026

    28 °F

  • Average January

    32.6 °F

  • Highest 4 January, 2026

    43 °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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