Great Falls Airport (GTF) Weather 10/31/2025
Overnight
40
Slight Chance Rain
Sunday
58
Chance Rain and Windy
Sunday Night
37
Breezy. Partly Cloudy then Slight Chance Rain
Monday
51
Breezy. Slight Chance Rain then Mostly Sunny
Monday Night
34
Mostly Clear
Tuesday
61
Sunny
Tuesday Night
35
Partly Cloudy
Wednesday
66
Mostly Sunny
Wednesday Night
42
Partly Cloudy
Thursday
64
Mostly Sunny
Thursday Night
43
Mostly Cloudy
Friday
68
Partly Sunny
Friday Night
42
Mostly Cloudy
Weekly Forecast
Overnight
A 20 percent chance of rain before 3am. Cloudy, with a low around 40. South southwest wind around 20 mph, with gusts as high as 28 mph.
Sunday
A 30 percent chance of rain, mainly before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 58. Windy, with a west southwest wind 20 to 25 mph increasing to 28 to 33 mph in the afternoon. Winds could gust as high as 50 mph.
Sunday Night
A 20 percent chance of rain after midnight. Increasing clouds, with a low around 37. Breezy, with a west southwest wind 23 to 28 mph decreasing to 16 to 21 mph after midnight. Winds could gust as high as 39 mph.
Monday
A 20 percent chance of rain before noon. Cloudy through mid morning, then gradual clearing, with a high near 51. Breezy, with a west wind 16 to 24 mph, with gusts as high as 33 mph.
Monday Night
Mostly clear, with a low around 34. Southwest wind 15 to 18 mph, with gusts as high as 25 mph.
Tuesday
Sunny, with a high near 61. Southwest wind 16 to 18 mph, with gusts as high as 26 mph.
Tuesday Night
Partly cloudy, with a low around 35. South southwest wind around 11 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 66. South southwest wind 10 to 15 mph, with gusts as high as 24 mph.
Wednesday Night
Partly cloudy, with a low around 42.
Thursday
Mostly sunny, with a high near 64.
Thursday Night
Mostly cloudy, with a low around 43.
Friday
Partly sunny, with a high near 68.
Friday Night
Mostly cloudy, with a low around 42.