Great Falls Weather Forecast

    • 56
    • 78

    Becoming Sunny

    • 61
    • 78

    Partly Sunny

    • 67
    • 85

    Partly Sunny

    • 69
    • 93

    Rain Showers Likely

    • 61
    • 80

    Slight Chance Thunderstorms

    • 61
    • 82

    Mostly Sunny

Today 15 Jun Central and Southeast Montgomery

Partly sunny. Highs in the upper 70s. Northwest Winds around 10 Mph with Gusts up to 20 Mph.

Tonight 15 Jun Central and Southeast Montgomery

Mostly clear. Lows in the mid 50s. Northwest Winds 5 to 10 Mph.

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Great Falls Temperature Statistics

June Temperature

Washington/Dulles International Airport, DC (9.3 miles)

  • Lowest 3 June, 2026

    50.6 °F

  • Average June

    74.1 °F

  • Highest 11 June, 2026

    94.6 °F

Climate (2021–Present)

Washington/Dulles International Airport, DC (9.3 miles)

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  • Average Low 2021–2026

    47.5 °F

  • Average 2021–2026

    58.2 °F

  • Average High 2021–2026

    68.6 °F
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