Weather WorldGranite Mountain Memorial, MT Weather Forecast
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Granite Mountain Memorial Weather Forecast
| TODAY | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT |
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| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Partly Cloudy | Mostly Cloudy | Chance of Rain | Chance of T-Storm | Chance of Rain | Chance of Rain | Mostly Clear | Chance of Rain | Chance of Rain |
| Hi: 85°FHi: 29°C | Lo: 46°FLo: 8°C | Hi: 80°FHi: 27°C | Lo: 46°FLo: 8°C | Hi: 76°FHi: 24°C | Lo: 46°FLo: 8°C | Hi: 70°FHi: 21°C | Lo: 36°FLo: 2°C | Hi: 66°FHi: 19°C | Lo: 36°FLo: 2°C | Hi: 75°FHi: 24°C | Lo: 45°FLo: 7°C |
| POP: 50% | POP: 30% | POP: 40% | POP: 20% | POP: 60% | POP: 50% | POP: 20% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1223 AM MDT Wed Aug 26 2026 
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Issued: 214 PM MDT Tue Aug 25 2026
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KEY MESSAGES:- Warmest temperatures today and Wednesday.
- Thunderstorms this afternoon south of Interstate 90. Expanding coverage into all of western Montana and north central Idaho on Wednesday. Main threats will be lightning and gusty outflow winds.
- Pacific Northwest trough brings gusty winds later this week and cooler temperatures for the weekend.
Hot, dry and smoky conditions will continue through Wednesday as high pressure remains anchored over western Montana. Monsoon moisture fr...