Great Falls Park Weather Forecast

    • 31
    • 44

    Chance Rain/Snow

    • 17
    • 35

    Rain/Snow

    • 5
    • 21

    Partly Sunny

    • 7
    • 22

    Chance Snow

    • 7
    • 20

    Partly Sunny

    • 15
    • 30

    Slight Chance Snow

Today 18 Jan Central and Southeast Montgomery

Cloudy with a 40 percent chance of rain Showers. Highs in the mid 40s. South Winds 5 to 10 Mph.

Tonight 18 Jan Central and Southeast Montgomery

Mostly cloudy. Lows around 30. South Winds 5 to 10 Mph.

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  • Temperature Real-Time

Great Falls Park Temperature Statistics

January Temperature

Washington/Dulles International Airport, DC (11.2 miles)

  • Lowest 5 January, 2025

    15.9 °F

  • Average January

    30.6 °F

  • Highest 1 January, 2025

    49.6 °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

    58.2 °F

  • Average High 2020–2025

    68.3 °F
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