Great Falls Airport (GTF) Weather 06/23/2026
This Afternoon
86
Sunny and Windy
Tonight
50
Slight Chance T-storms and Windy then Chance Showers
Wednesday
69
Sunny then Slight Chance T-storms
Wednesday Night
46
Chance Showers then Partly Cloudy
Thursday
73
Sunny
Thursday Night
47
Mostly Clear
Juneteenth
76
Mostly Sunny
Friday Night
50
Mostly Cloudy
Saturday
82
Mostly Sunny
Saturday Night
51
Slight Chance T-storms then Slight Chance Showers
Sunday
74
Partly Sunny then Chance Showers
Sunday Night
47
Partly Cloudy
Monday
73
Mostly Sunny
Weekly Forecast
This Afternoon
Sunny, with a high near 86. Windy, with a west wind 30 to 32 mph, with gusts as high as 46 mph.
Tonight
A slight chance of showers and thunderstorms, then a chance of showers after midnight. Increasing clouds, with a low around 50. Windy, with a west wind 21 to 31 mph decreasing to 8 to 18 mph after midnight. Winds could gust as high as 46 mph. Chance of precipitation is 40%.
Wednesday
A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 69. West wind 6 to 11 mph becoming north in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
A 30 percent chance of showers and thunderstorms before 9pm. Mostly cloudy, with a low around 46. North wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Thursday
Sunny, with a high near 73. Calm wind becoming north 5 to 7 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 47. Northeast wind 5 to 11 mph, with gusts as high as 18 mph.
Juneteenth
Mostly sunny, with a high near 76. Light and variable wind becoming east northeast 5 to 8 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 50. East northeast wind 5 to 13 mph becoming south after midnight. Winds could gust as high as 20 mph.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 51.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 74.
Sunday Night
Partly cloudy, with a low around 47.
Monday
Mostly sunny, with a high near 73.