Great Falls Park Weather Forecast

    • 52
    • 71

    Chance Rain Showers

    • 53
    • 72

    Partly Sunny

    • 57
    • 71

    Rain Showers

    • 60
    • 65

    Rain Showers Likely

    • 62
    • 77

    Chance Rain Showers

    • 60
    • 77

    Chance Rain Showers

Today 25 May Central and Southeast Montgomery

Mostly sunny. Highs around 70. Northwest Winds 5 to 10 Mph.

Tonight 25 May Central and Southeast Montgomery

Mostly cloudy with a 20 percent chance of Showers. Lows in the lower 50s. Northwest Winds around 5 Mph.

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Great Falls Park Temperature Statistics

May Temperature

Washington/Dulles International Airport, DC (11.2 miles)

  • Lowest 10 May, 2025

    40.6 °F

  • Average May

    67.1 °F

  • Highest 16 May, 2025

    89.7 °F

Climate (2020–Present)

Washington/Dulles International Airport, DC (11.2 miles)

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  • Average Low 2020–2025

    47.9 °F

  • Average 2020–2025

    58.3 °F

  • Average High 2020–2025

    68.5 °F
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