Weather forecast for: Great Falls International Airport MT
Last Update: 12:31 pm MDT Oct 18, 2026
Tonight: Partly cloudy, with a low around 38. East northeast wind 5 to 7 mph becoming light and variable after midnight.
Monday: Sunny, with a high near 71. South southwest wind 3 to 6 mph.
Monday Night: Partly cloudy, with a low around 40. Light and variable wind becoming west southwest around 5 mph.
Tuesday: Mostly sunny, with a high near 56. West wind around 6 mph becoming light and variable in the afternoon.
Tuesday Night: Partly cloudy, with a low around 37. Light and variable wind.
Wednesday: Sunny, with a high near 69. Calm wind becoming south around 6 mph in the afternoon.
Wednesday Night: Mostly clear, with a low around 46. South southwest wind 5 to 9 mph.
Thursday: Mostly sunny, with a high near 71. Southwest wind 6 to 8 mph.
Thursday Night: A chance of rain, mainly after midnight. Mostly cloudy, with a low around 46.
Friday: Rain likely. Cloudy, with a high near 51.
Friday Night: A chance of rain and snow. Mostly cloudy, with a low around 36.
Saturday: Mostly sunny, with a high near 44.
Saturday Night: Mostly cloudy, with a low around 32.
Sunday: A slight chance of rain and snow. Partly sunny, with a high near 43.
WeatherWorld.com
City of Great Falls, MT
