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Trinity School Weather Forecast
| TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | LABOR DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY |
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| Rain | Chance of Rain | Chance of Rain | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Rain | Chance of Rain | Partly Cloudy | Partly Cloudy |
| Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 66°FHi: 19°C | Lo: 40°FLo: 4°C | Hi: 70°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C | Lo: 40°FLo: 4°C | Hi: 65°FHi: 18°C | Lo: 40°FLo: 4°C | Hi: 70°FHi: 21°C |
| POP: 70% | POP: 50% | POP: 50% | POP: 60% | POP: 60% | POP: 40% | POP: 80% | POP: 90% | POP: 70% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1222 PM MDT Thu Sep 03 2026 
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Issued: 136 PM MDT Thu Sep 3 2026
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KEY MESSAGES:- Widespread showers and seasonably cool temperatures persist through the rest of the week and into early next week.
- Near-critical fire weather continues for southwest Montana on Friday due to gusty winds and low humidity.
No significant changes in the forecast. The significant low pressure system is continuing to move into the Pacific Northwest which will cause southwesterly flow over the Northern Rockies. This flow pattern will keep a decent fetch of moisture streaming ...