Potomac River - Four Mile Run Entrance Weather Forecast

    • 70
    • 94

    Chance Thunderstorms

    • 65
    • 84

    Chance Rain Showers

    • 65
    • 85

    Mostly Sunny

    • 67
    • 87

    Mostly Cloudy

    • 65
    • 86

    Rain Showers

    • 64
    • 84

    Slight Chance Thunderstorms

Today 18 Jun Arlington/Falls Church/Alexandria

Partly sunny. A slight chance of Showers in the Morning, then a chance of Showers and Thunderstorms in the afternoon. Highs in the mid 90s. Southwest Winds 15 to 20 Mph with Gusts up to 35 Mph. Chance of rain 50 percent.

Tonight 18 Jun Arlington/Falls Church/Alexandria

Mostly cloudy. Lows in the lower 70s. South Winds around 10 Mph with Gusts up to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Potomac River - Four Mile Run Entrance Temperature Statistics

June Temperature

Washington/Reagan National Airport, DC (0.6 miles)

  • Lowest 2 June, 2026

    55.7 °F

  • Average June

    78 °F

  • Highest 12 June, 2026

    100.7 °F

Climate (2021–2026)

Washington/Reagan National Airport, DC (0.6 miles)

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  • Average Low 2021–2026

    52.4 °F

  • Average 2021–2026

    60.4 °F

  • Average High 2021–2026

    69.2 °F
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