Great Falls Weather Forecast

    • 24
    • 51

    Slight Chance Rain/Snow

    • 48
    • 70

    Partly Sunny

    • 45
    • 68

    Rain Showers Likely

    • 46
    • 73

    Chance Rain

    • 41
    • 65

    Chance Rain

    • 44
    • 72

    Partly Sunny

Today 5 May Cascade County below 5000ft

Mostly cloudy. Slight chance of snow in the Morning, then chance of snow and slight chance of rain in the afternoon. Highs in the upper 40s. North Winds 5 to 15 Mph increasing to 15 to 20 Mph in the afternoon. Chance of precipitation 40 percent.

Tonight 5 May Cascade County below 5000ft

Partly cloudy. A 20 percent chance of rain Showers and snow Showers. Highs in the upper 40s. Lows 24 to 33. South Winds up to 20 Mph.

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Great Falls Temperature Statistics

May Temperature

Great Falls, Great Falls International Airport (3.7 miles)

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  • Average May

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Climate (2021–Present)

Great Falls, Great Falls International Airport (3.7 miles)

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  • Average Low 2021–2026

    34.4 °F
  • Average 2021–2026

    47 °F
  • Average High 2021–2026

    59.1 °F
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