Waterfall Park Weather Forecast

    • 59
    • 82

    Mostly Sunny

    • 59
    • 83

    Mostly Sunny

    • 61
    • 84

    Partly Sunny

    • 68
    • 86

    Chance Thunderstorms

    • 68
    • 87

    Chance Rain Showers

Today 23 Aug Northwest Prince William

Mostly sunny with a slight chance of Showers and Thunderstorms. Highs in the lower 80s. West Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 20 percent.

Tonight 23 Aug Northwest Prince William

Mostly clear. Lows in the upper 50s. West Winds 5 to 10 Mph.

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Waterfall Park Temperature Statistics

August Temperature

Washington/Dulles International Airport, DC (12.4 miles)

  • Lowest 19 August, 2026

    62.7 °F

  • Average August

    79.2 °F

  • Highest 10 August, 2026

    92.6 °F

Climate (2021–2026)

Washington/Dulles International Airport, DC (12.4 miles)

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  • Average Low 2021–2026

    47.6 °F

  • Average 2021–2026

    58.3 °F

  • Average High 2021–2026

    68.6 °F
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