Great Falls Weather Forecast

    • 37
    • 63

    Chance Rain

    • 15
    • 44

    Chance Rain/Snow

    • 24
    • 47

    Mostly Cloudy

    • 36
    • 60

    Rain Likely

    • 27
    • 49

    Rain

    • 22
    • 39

    Chance Snow

    • 29
    • 49

    Partly Sunny

Today 29 Mar Cascade County below 5000ft

Mostly cloudy. A 20 percent chance of rain late in the afternoon. Highs in the lower 60s. West Winds 10 to 15 Mph with Gusts to around 35 Mph.

Tonight 29 Mar Cascade County below 5000ft

Not as cool. Mostly cloudy. Chance of rain until early Morning, then slight chance of rain early in the morning. Lows in the mid 30s. Southwest Winds 5 to 15 Mph. Gusts up to 45 Mph decreasing to 30 Mph after midnight. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Great Falls Temperature Statistics

March Temperature

Great Falls, Great Falls International Airport (3.7 miles)

  • Lowest 15 March, 2026

    -5.4 °F

  • Average March

    40.9 °F

  • Highest 20 March, 2026

    76.6 °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

    47 °F

  • Average High 2021–2026

    59 °F
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