Great Falls Weather Forecast

    • 66
    • 70

    Chance Rain Showers

    • 70
    • 81

    Rain Showers Likely

    • 73
    • 89

    Chance Thunderstorms

    • 68
    • 91

    Chance Thunderstorms

    • 64
    • 84

    Mostly Sunny

    • 70
    • 87

    Partly Sunny

Today 16 Jun Central and Southeast Montgomery

Cloudy. Patchy fog in the morning. A chance of Showers in the Morning, then a slight chance of Showers and Thunderstorms in the afternoon. Highs around 70. Northeast Winds 5 to 10 Mph. Chance of rain 40 percent.

Tonight 16 Jun Central and Southeast Montgomery

Mostly cloudy. A slight chance of Showers and Thunderstorms in the Evening, then a chance of Showers after midnight. Lows in the mid 60s. East Winds around 5 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Great Falls Temperature Statistics

June Temperature

Washington/Dulles International Airport, DC (9.3 miles)

  • Lowest 2 June, 2025

    43.6 °F

  • Average June

    72.1 °F

  • Highest 12 June, 2025

    88 °F

Climate (2020–Present)

Washington/Dulles International Airport, DC (9.3 miles)

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  • Average Low 2020–2025

    47.9 °F

  • Average 2020–2025

    58.3 °F

  • Average High 2020–2025

    68.5 °F
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