Mill Run, PA Weather Forecast
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Mill Run Weather Forecast
| OVERNIGHT | TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY |
| Showers | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Showers | Showers | Chance of Showers | Chance of Showers | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy |
| Lo: 60°FLo: 16°C | Hi: 65°FHi: 18°C | Lo: 55°FLo: 13°C | Hi: 65°FHi: 18°C | Lo: 50°FLo: 10°C | Hi: 60°FHi: 16°C | Lo: 49°FLo: 9°C | Hi: 59°FHi: 15°C | Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C | Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C |
| POP: 70% | POP: 90% | POP: 90% | POP: 80% | POP: 70% | POP: 70% | POP: 50% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 138 AM EDT Mon Sep 21 2026 

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Issued: 204 AM EDT Mon Sep 21 2026
Key Messages
1) Rain chances continue into early this week. Longer duration rainfall totals could be high and lead to localized flooding and/or river rises
2) Much cooler temperatures arrive by mid-week
Discussion
... KEY MESSAGE 1... An MCS that moved into central West Virginia Sunday evening will provide a shield of stratiform light to moderate rain with embedded thunder across eastern Ohio overnight Sunday night. While true flash flood concerns are lower, some localized heavier rates are tracking...
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