Great Falls Weather Forecast

    • 45
    • 65

    Increasing Clouds

    • 42
    • 67

    Chance Rain Showers

    • 44
    • 67

    Chance Rain Showers

    • 45
    • 70

    Chance Rain

    • 48
    • 76

    Mostly Sunny

    • 49
    • 81

    Partly Sunny

Today 12 May Cascade

Sunny early in the morning then becoming partly cloudy. Highs 55 to 65. West Winds 5 to 10 Mph.

Tonight 12 May Cascade

Mostly cloudy. A 20 percent chance of rain after midnight. Lows 40 to 45. Southwest Winds 5 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 3 May, 2021

    28.9 °F
  • Average May

    46.7 °F
  • Highest 6 May, 2021

    72 °F

Climate (2010–Present)

Great Falls, Great Falls International Airport (3.7 miles)

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  • Average Low 2010–Present

    32.1 °F
  • Average 2010–Present

    43.4 °F
  • Average High 2010–Present

    54.5 °F
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