Great Falls Weather Forecast

    • 44
    • 65

    Sunny

    • 52
    • 72

    Sunny

    • 51
    • 79

    Mostly Sunny

    • 50
    • 73

    Partly Sunny

    • 54
    • 72

    Partly Sunny

    • 57
    • 70

    Chance Rain Showers

Today 6 Oct Central and Southeast Montgomery

Sunny. Highs in the mid 60s. North Winds around 5 Mph.

Tonight 6 Oct Central and Southeast Montgomery

Clear. Lows in the mid 40s. Light and variable Winds.

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Great Falls Temperature Statistics

October Temperature

Washington/Dulles International Airport, DC (9.3 miles)

  • Lowest 3 October, 2026

    57.9 °F

  • Average October

    68.2 °F

  • Highest 2 October, 2026

    89.7 °F

Climate (2021–2026)

Washington/Dulles International Airport, DC (9.3 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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