Great Falls Weather Forecast

    • 46
    • 80

    Mostly Sunny

    • 49
    • 80

    Partly Sunny

    • 48
    • 80

    Rain Likely

    • 42
    • 62

    Rain Showers Likely

    • 47
    • 70

    Slight Chance Rain

    • 46
    • 74

    Chance Rain

Today 11 May Cascade County below 5000ft

Sunny. Highs 75 to 80. West Winds 5 to 15 Mph.

Tonight 11 May Cascade County below 5000ft

Partly cloudy. A 20 percent chance of rain Showers in the evening. Lows in the mid 40s. Southwest Winds 5 to 10 Mph.

Graph Plots Open in Graphs

  • 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

    43 °F

  • Highest 4 May, 2024

    64.7 °F

Climate (2019–Present)

Great Falls, Great Falls International Airport (3.7 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2019–2024

    33.8 °F

  • Average 2019–2024

    45.7 °F

  • Average High 2019–2024

    57.3 °F
Get an account to remove ads