Great Falls International Airport Weather Forecast

    • 20
    • 35

    Chance Snow

    • 12
    • 30

    Mostly Cloudy

    • 5
    • 24

    Mostly Cloudy

    • 11
    • 23

    Partly Sunny

    • 20
    • 36

    Partly Sunny

    • 27
    • 41

    Mostly Cloudy

Today 20 Jan Cascade County below 5000ft

Cloudy with a 50 percent chance of snow in the Morning, then mostly sunny in the afternoon. Highs in the mid 30s. Northwest Winds 10 to 15 Mph with Gusts to around 30 Mph.

Tonight 20 Jan Cascade County below 5000ft

Mostly clear. Lows around 19. Southwest Winds 5 to 15 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Great Falls International Airport Temperature Statistics

January Temperature

Great Falls, Great Falls International Airport (0.6 miles)

  • Lowest 16 January, 2026

    14 °F

  • Average January

    40 °F

  • Highest 14 January, 2026

    63 °F

Climate (2021–Present)

Great Falls, Great Falls International Airport (0.6 miles)

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

  • Average Low 2021–2026

    34.1 °F

  • Average 2021–2026

    46.6 °F

  • Average High 2021–2026

    58.6 °F
Get WillyWeather+ to remove ads