Roy, MT Weather Forecast
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Roy Weather Forecast
| REST OF TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
| Clearing | Sunny | Partly Cloudy | Sunny | Chance of Showers | Chance of T-Storm | Chance of Showers | Mostly Cloudy | Chance of Showers | Showers Likely | Showers Likely | Clearing |
| Lo: 48°FLo: 9°C | Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C | Hi: 85°FHi: 29°C | Lo: 50°FLo: 10°C | Hi: 61°FHi: 16°C | Lo: 41°FLo: 5°C | Hi: 59°FHi: 15°C | Lo: 40°FLo: 4°C | Hi: 55°FHi: 13°C Lo: 39°FLo: 4°C | Hi: 55°FHi: 13°C Lo: 39°FLo: 4°C | Hi: 65°FHi: 18°C |
| POP: 20% | POP: 50% | POP: 70% | POP: 20% | POP: 50% | POP: 60% | POP: 60% |
POP = Probability of Precipitation.
Weather Outlook Updated: 602 PM MDT Tue Sep 08 2026 

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Issued: 1132 PM MDT Tue Sep 8 2026
Key Messages
- Rain will gradually end along the Hi-Line this evening.
- It will be dry and breezy on Wednesday and Thursday.
- Precipitation and cooler temperatures return Friday through this weekend.
Discussion
... /Issued 606 PM MDT Tue Sep 8 2026/- Meteorological Overview:
An upper-level trough is moving over North-central, Central, and Southwestern Montana this afternoon. As a result rain showers will linger across the Hi-Line through this evening with cooler temperatures across the area. On Wednesday...
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