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
| 03 October 2026 Sat 19.2 ° C ( 66.6°F )  Overcast |
Feels Like : 15.6 ° C / 60.1°F Humidity : % 30 Pressure : 1020 mb Wind Speed : 9.4 kmph / 5.8 miles from E 
Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 98 |
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 |
|---|---|---|---|---|---|---|---|
| 03 October 2026 Sat | Overcast |
8.2 ° C | 20.9 ° C | 14 ° C | % 44 | 13 km/h | 5% |
| 04 October 2026 Sun |  Sunny |
8.5 ° C | 27.8 ° C | 16.2 ° C | % 36 | 13 km/h | 1% |
| 05 October 2026 Mon | Sunny |
14.2 ° C | 28.6 ° C | 19.9 ° C | % 21 | 37.4 km/h | 3% |
| 06 October 2026 Tue | Sunny |
10.8 ° C | 26.6 ° C | 17.2 ° C | % 21 | 10.4 km/h | 1% |
| 07 October 2026 Wed | Sunny |
10.8 ° C | 23.6 ° C | 16 ° C | % 28 | 11.9 km/h | 3% |
| 08 October 2026 Thu | Overcast |
9.8 ° C | 20.7 ° C | 14.2 ° C | % 38 | 13.7 km/h | 6% |
| 09 October 2026 Fri |  Partly Cloudy |
9.5 ° C | 27.2 ° C | 16.8 ° C | % 29 | 20.5 km/h | 3% |
| 10 October 2026 Sat | Overcast |
11.9 ° C | 20.7 ° C | 16 ° C | % 33 | 15.8 km/h | 36% |
| 11 October 2026 Sun | Overcast |
3.4 ° C | 12 ° C | 5.6 ° C | % 85 | 19.1 km/h | 90% |
| 12 October 2026 Mon | Overcast |
2.3 ° C | 11.5 ° C | 6.2 ° C | % 58 | 33.5 km/h | 12% |
| 13 October 2026 Tue | Overcast |
3.4 ° C | 9.1 ° C | 5.8 ° C | % 58 | 23.4 km/h | 57% |
| 14 October 2026 Wed | Sunny |
2.5 ° C | 15.1 ° C | 8.2 ° C | % 54 | 37.1 km/h | 3% |
| 15 October 2026 Thu | Overcast |
12.2 ° C | 18.3 ° C | 15 ° C | % 49 | 47.2 km/h | 8% |
| 16 October 2026 Fri | Overcast |
11.3 ° C | 22.8 ° C | 15.7 ° C | % 51 | 25.2 km/h | 9% |
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