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Patterson Weather Forecast
| TODAY | TONIGHT | SUNDAY | SUNDAY NIGHT | LABOR DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT |
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| Clearing | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Rain | Mostly Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy | Chance of Rain | Partly Cloudy |
| Hi: 70°FHi: 21°C | Lo: 46°FLo: 8°C | Hi: 70°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 55°FHi: 13°C | Lo: 36°FLo: 2°C | Hi: 66°FHi: 19°C | Lo: 40°FLo: 4°C | Hi: 75°FHi: 24°C | Lo: 45°FLo: 7°C | Hi: 75°FHi: 24°C | Lo: 46°FLo: 8°C |
| POP: 50% | POP: 50% | POP: 50% | POP: 90% | POP: 100% | POP: 40% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1222 AM MDT Sat Sep 05 2026 
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Issued: 257 PM MDT Sat Sep 5 2026
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KEY MESSAGES:- Some stronger showers and storms possible this afternoon and again Sunday afternoon.
- Significant rain event for much of the Northern Rockies Sunday through Tuesday morning.
- Gradual drying trend develops mid-week alongside morning valley fog.
A closed low pressure circulation is visible this afternoon on satellite imagery along the Washington/Oregon border. This low will continue to send waves of energy into western Montana and north central Idaho, increasing shower and ...