Great Falls Weather Forecast

    • 16
    • 31

    Mostly Cloudy

    • 43
    • 50

    Chance Rain

    • 46
    • 59

    Breezy

    • 47
    • 64

    Breezy

    • 49
    • 68

    Breezy

    • 46
    • 72

    Mostly Cloudy

Today 15 Mar Cascade County below 5000ft

Mostly sunny. Highs around 30. Southwest Winds up to 10 Mph.

Tonight 15 Mar Cascade County below 5000ft

Not as cold. Partly cloudy early in the evening then becoming mostly cloudy. A 20 percent chance of snow after midnight. Lows around 18. Southwest Winds up to 10 Mph. Gusts up to 30 Mph after midnight.

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Great Falls Temperature Statistics

March Temperature

Great Falls, Great Falls International Airport (3.7 miles)

  • Lowest 1 March, 2026

    12 °F

  • Average March

    38.9 °F

  • Highest 3 March, 2026

    63.6 °F

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

    46.9 °F

  • Average High 2021–2026

    59 °F
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