Great Falls Airport (GTF) Weather 09/20/2025
Tonight
47
Mostly Clear
Thursday
79
Sunny
Thursday Night
47
Mostly Clear
Friday
80
Mostly Sunny
Friday Night
48
Mostly Clear
Saturday
84
Sunny
Saturday Night
54
Mostly Clear
Sunday
77
Mostly Sunny
Sunday Night
47
Partly Cloudy
Monday
76
Sunny
Monday Night
48
Mostly Clear
Tuesday
83
Sunny
Tuesday Night
49
Mostly Clear
Weekly Forecast
Tonight
Mostly clear, with a low around 47. East southeast wind around 6 mph becoming south southwest after midnight.
Thursday
Sunny, with a high near 79. Calm wind becoming northeast 5 to 7 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 47. East northeast wind 5 to 8 mph becoming south southwest after midnight.
Friday
Mostly sunny, with a high near 80. Calm wind becoming east northeast around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 48. Northeast wind 6 to 8 mph becoming southwest after midnight.
Saturday
Sunny, with a high near 84. South southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Saturday Night
Mostly clear, with a low around 54. Southwest wind 9 to 14 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 77. Southwest wind 14 to 21 mph, with gusts as high as 32 mph.
Sunday Night
Partly cloudy, with a low around 47.
Monday
Sunny, with a high near 76.
Monday Night
Mostly clear, with a low around 48.
Tuesday
Sunny, with a high near 83.
Tuesday Night
Mostly clear, with a low around 49.