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The Fort Weather Forecast
| LATE THIS AFTERNOON | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  | |  |  |  | | |  |  | | |
| Partly Cloudy | Thunderstorms | Clearing | Clear | Mostly Sunny | Chance of Showers | Clearing | Chance of Showers | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Showers |
| Hi: 69°FHi: 21°C | Lo: 55°FLo: 13°C | Hi: 69°FHi: 21°C | Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C | Lo: 49°FLo: 9°C | Hi: 75°FHi: 24°C | Lo: 50°FLo: 10°C | Hi: 69°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C | Lo: 49°FLo: 9°C |
| POP: 70% | POP: 20% | POP: 20% | POP: 40% | POP: 50% | POP: 50% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 437 PM MDT Sun Sep 13 2026 
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Issued: 546 PM MDT Sun Sep 13 2026
Key Messages
- Widespread rainfall still looks likely overnight.
- Becoming windy on Monday, especially across the northwest.
- Fire weather concerns on Monday are the wildcard on Monday across the northwest.
Discussion
...(This Evening Through Sunday) Issued at 1232 PM MDT Sun Sep 13 2026
Latest water vapor imagery shows 500hpa low spinning across southern WA state with ridging setting up from eastern MT into eastern CO. Upper flow across the Dakotas has turned more northwesterly with broad cyclonic flow...