Great Falls Weather Forecast

    • 51
    • 76

    Rain Showers

    • 46
    • 62

    Chance Rain Showers

    • 51
    • 67

    Partly Sunny

    • 53
    • 72

    Chance Rain Showers

    • 57
    • 79

    Rain Showers Likely

    • 48
    • 70

    Chance Rain Showers

Today 6 May Central and Southeast Montgomery

Showers in the Morning, then Showers likely with a slight chance of Thunderstorms in the afternoon. Highs in the mid 70s. Southwest Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 90 percent.

Tonight 6 May Central and Southeast Montgomery

Mostly cloudy. Showers likely with a slight chance of Thunderstorms in the Evening, then a chance of Showers after midnight. Lows in the lower 50s. Northwest Winds 5 to 10 Mph. Chance of rain 60 percent.

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Great Falls Temperature Statistics

May Temperature

Washington/Dulles International Airport, DC (9.3 miles)

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Climate (2021–Present)

Washington/Dulles International Airport, DC (9.3 miles)

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  • Average Low 2021–2026

    47.6 °F

  • Average 2021–2026

    58.2 °F

  • Average High 2021–2026

    68.5 °F
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