Weather WorldGreat Falls Intl, MT Weather Forecast
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Great Falls Intl Weather Forecast
| TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT |
 |  |  |  |  |  |  | | |  | | |
| Smoke | Mostly Sunny | Mostly Cloudy | Partly Sunny | Chance of T-Storm | Chance of T-Storm | Mostly Clear | Mostly Clear | Mostly Clear | Partly Cloudy | Sunny | Partly Cloudy |
| Lo: 59°FLo: 15°C | Hi: 85°FHi: 29°C | Lo: 59°FLo: 15°C | Hi: 90°FHi: 32°C | Lo: 60°FLo: 16°C | Hi: 89°FHi: 32°C | Hi: 81°FHi: 27°C Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C Lo: 55°FLo: 13°C | Lo: 55°FLo: 13°C | Hi: 85°FHi: 29°C | Hi: 81°FHi: 27°C Lo: 55°FLo: 13°C |
| POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 336 PM MDT Thu Aug 20 2026 
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Issued: 549 PM MDT Thu Aug 20 2026
Key Messages
- It will be hot and dry through Friday, with the warmer temperatures extending through Sunday.
- There is a chance for thunderstorms in Southwest MT Friday, with chances for showers and thunderstorms in Southwest and Central MT Saturday and Sunday.
- A cold front will bring gusty winds across the CWA Sunday, and will cause below seasonal average temperatures on Monday.
Discussion
...- Meteorological Overview:
Montana continues to be under the influence of an uppe...