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Basin Weather Forecast
| TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | MONDAY | TUESDAY | WEDNESDAY |
 |  |  | | | | |  | | | |
| Mostly Clear | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Clear |
| Lo: 44°FLo: 7°C | Hi: 72°FHi: 22°C | Lo: 48°FLo: 9°C | Hi: 66°FHi: 19°C | Lo: 47°FLo: 8°C | Hi: 60°FHi: 16°C | Lo: 44°FLo: 7°C | Hi: 68°FHi: 20°C Lo: 45°FLo: 7°C | Hi: 68°FHi: 20°C Lo: 45°FLo: 7°C | Hi: 68°FHi: 20°C Lo: 45°FLo: 7°C | Hi: 68°FHi: 20°C Lo: 45°FLo: 7°C |
| POP: 20% | POP: 50% | POP: 80% | POP: 90% | POP: 80% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 336 PM MDT Wed Sep 16 2026 
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Issued: 1224 PM MDT Wed Sep 16 2026
Key Messages
- Showers/thunderstorms arrive in SW MT late Thursday morning/early afternoon, then spread northward into central MT during the evening.
- There is the potential for strong storms Thursday through Saturday.
- Shift to drier and milder conditions beginning Sunday.
Discussion
...- Meteorological Overview:
The next upper level trough moves into the area out of the west on Thursday. Due to the SW flow over central MT, there will be a resulting unstable airmass that develops. As such, expect rounds...