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Poly Drive School Weather Forecast
| REST OF TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY |
 | |  |  |  | | | |  |  |  |  |
| Rain Showers | Rain Showers | Mostly Clear | Sunny | Partly Cloudy | Sunny | Mostly Clear | Mostly Sunny | Chance of Showers | Chance of T-Storm | Chance of T-Storm | Chance of Showers |
| Lo: 50°FLo: 10°C | Hi: 69°FHi: 21°C | Lo: 41°FLo: 5°C | Hi: 71°FHi: 22°C | Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C | Lo: 49°FLo: 9°C | Hi: 79°FHi: 26°C | Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C |
| POP: 60% | POP: 20% | POP: 40% | POP: 50% | POP: 60% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1021 PM MDT Sun Sep 13 2026 
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Issued: 942 PM MDT Sun Sep 13 2026
Key Messages
- Below average temperatures through the middle of the week.
- Chance of showers (mainly light) through Monday. Isolated thunderstorms possible in southeast Montana this evening and overnight, possibly strong.
- Cold front brings breezy northwest winds overnight. Brisk west winds across the area Monday; widespread gusts of 30 to 50 mph, strongest from Big Timber to Harlowton and near the Dakotas border.
Discussion
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Through Saturday...
An upper low centered over southern WA and troughing ove...