Great Falls International Airport (GTF) 15 Day Weather Forecast, Great Falls United States
Current weather conditions and 15 day weather forecast for Great Falls International Airport in Great Falls, United States including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain, wind speed, cloud, pressure, and UV index.
Current weather conditions at GTF
| 24 August 2026 Mon 21.7 ° C ( 71.1°F )  Clear |
Feels Like : 17.7 ° C / 63.9°F Humidity : % 22 Pressure : 1011 mb Wind Speed : 9.7 kmph / 6 miles from WNW 
Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15-day weather forecast for Great Falls International Airport, Great Falls, United States
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 23 August 2026 Sun | Sunny |
19.8 ° C | 33.4 ° C | 25.8 ° C | % 36 | 42.5 km/h | 4% |
| 24 August 2026 Mon | Sunny |
14.3 ° C | 27.9 ° C | 20.7 ° C | % 29 | 18.4 km/h | 1% |
| 25 August 2026 Tue | Sunny |
14.5 ° C | 29.4 ° C | 21.5 ° C | % 37 | 20.9 km/h | 2% |
| 26 August 2026 Wed | Sunny |
16.4 ° C | 33.4 ° C | 24.4 ° C | % 30 | 24.8 km/h | 5% |
| 27 August 2026 Thu |  Overcast |
18.1 ° C | 34.6 ° C | 23 ° C | % 43 | 26.6 km/h | 60% |
| 28 August 2026 Fri | Sunny |
15.9 ° C | 33.4 ° C | 24.1 ° C | % 39 | 22.3 km/h | 1% |
| 29 August 2026 Sat | Sunny |
16.6 ° C | 32.3 ° C | 24.5 ° C | % 27 | 25.2 km/h | 1% |
| 30 August 2026 Sun | Sunny |
16.8 ° C | 34.1 ° C | 24.9 ° C | % 28 | 14.8 km/h | 2% |
| 31 August 2026 Mon | Sunny |
15.4 ° C | 24.3 ° C | 19.9 ° C | % 25 | 50 km/h | 1% |
| 01 September 2026 Tue | Sunny |
13.3 ° C | 28 ° C | 19.9 ° C | % 24 | 27 km/h | 2% |
| 02 September 2026 Wed | Sunny |
14.9 ° C | 32 ° C | 22.6 ° C | % 18 | 36.7 km/h | 2% |
| 03 September 2026 Thu | Sunny |
13.5 ° C | 27.2 ° C | 20.1 ° C | % 23 | 15.8 km/h | 0% |
| 04 September 2026 Fri | Overcast |
12.5 ° C | 26.1 ° C | 18.8 ° C | % 28 | 36 km/h | 4% |
| 05 September 2026 Sat | Overcast |
11.5 ° C | 25 ° C | 17.7 ° C | % 45 | 17.6 km/h | 57% |
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