Potomac Weather Forecast

    • 67
    • 86

    Decreasing Clouds

    • 67
    • 85

    Mostly Sunny

    • 69
    • 87

    Mostly Sunny

    • 73
    • 91

    Mostly Sunny

    • 77
    • 97

    Slight Chance Thunderstorms

    • 75
    • 96

    Chance Thunderstorms

Today 21 Jul Arlington/Falls Church/Alexandria

Mostly sunny. Highs in the mid 80s. North Winds around 5 Mph.

Tonight 21 Jul Arlington/Falls Church/Alexandria

Mostly clear. Lows in the upper 60s. Northeast Winds around 5 Mph.

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  • Temperature Real-Time

Potomac Temperature Statistics

July Temperature

Washington/Reagan National Airport, DC (1.9 miles)

  • Lowest 5 July, 2025

    69.7 °F

  • Average July

    81.8 °F

  • Highest 8 July, 2025

    95.6 °F

Climate (2020–Present)

Washington/Reagan National Airport, DC (1.9 miles)

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  • Average Low 2020–2025

    52.7 °F

  • Average 2020–2025

    60.5 °F

  • Average High 2020–2025

    69.2 °F
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