Great Falls Weather Forecast

    • 48
    • 61

    Increasing Clouds

    • 59
    • 71

    Mostly Cloudy

    • 64
    • 80

    Partly Sunny

    • 48
    • 80

    Rain

    • 46
    • 54

    Rain Likely

    • 51
    • 52

    Rain Likely

Today 29 Mar Central and Southeast Montgomery

Mostly sunny. Highs around 60. South Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 29 Mar Central and Southeast Montgomery

Clear. Lows around 30. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Great Falls Temperature Statistics

March Temperature

Washington/Dulles International Airport, DC (9.3 miles)

  • Lowest 18 March, 2026

    23.6 °F

  • Average March

    51.1 °F

  • Highest 11 March, 2026

    86.6 °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

    58.1 °F

  • Average High 2021–2026

    68.5 °F
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