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Pierce School Weather Forecast
| OVERNIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
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| Chance of T-Storm | Chance of T-Storm | Showers | Chance of Showers | Partly Cloudy | Partly Cloudy | Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Mostly Sunny | Mostly Clear | Clearing |
| Lo: 51°FLo: 11°C | Hi: 60°FHi: 16°C | Lo: 49°FLo: 9°C | Hi: 65°FHi: 18°C | Lo: 49°FLo: 9°C | Hi: 71°FHi: 22°C | Lo: 51°FLo: 11°C | Hi: 79°FHi: 26°C | Lo: 51°FLo: 11°C | Hi: 81°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C |
| POP: 80% | POP: 90% | POP: 50% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 122 AM MDT Sun Sep 20 2026 
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Issued: 1034 PM MDT Sat Sep 19 2026
Key Messages
- Risk for excessive rainfall lingers through Sunday across eastern Wyoming into western South Dakota.
- Areas of fog possible again Sunday morning across much of western South Dakota.
- Gradual warming with drier conditions next week.
Discussion
...(This Evening Through Saturday) Issued at 122 PM MDT Sat Sep 19 2026
Current analysis shows the closed low continuing to spin and move slowly east into western Wyoming this afternoon. Downstream of this area of low pressure much of eastern Wyoming...