Great Falls Weather Forecast

    • 39
    • 65

    Chance Rain Showers

    • 42
    • 66

    Rain Showers Likely

    • 42
    • 65

    Partly Sunny

    • 45
    • 74

    Mostly Sunny

    • 50
    • 82

    Slight Chance Thunderstorms

    • 47
    • 78

    Chance Rain Showers

Today 24 May Cascade County below 5000ft

Mostly cloudy. Slight chance of rain in the Morning, then chance of rain Showers and slight chance of Thunderstorms in the afternoon. Highs 60 to 65. West Winds 10 to 15 Mph. Chance of precipitation 50 percent.

Tonight 24 May Cascade County below 5000ft

Partly cloudy. A 20 percent chance of Thunderstorms in the evening. Lows around 40. Southwest Winds up to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Great Falls Temperature Statistics

May Temperature

Great Falls, Great Falls International Airport (3.7 miles)

  • Lowest 1 May, 2024

    21.8 °F
  • Average May

    49.5 °F
  • Highest 11 May, 2024

    78.7 °F

Climate (2019–Present)

Great Falls, Great Falls International Airport (3.7 miles)

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  • Average Low 2019–2024

    33.8 °F
  • Average 2019–2024

    45.7 °F
  • Average High 2019–2024

    57.4 °F
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