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| THIS AFTERNOON | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT |
 |  |  | | |  | |  | | | | |
| Mostly Sunny | Chance of Showers | Chance of Showers | Chance of Showers | Mostly Sunny | Partly Cloudy | Chance of Showers | Showers | Chance of Showers | Chance of Showers | Mostly Sunny | Partly Cloudy |
| Hi: 85°FHi: 29°C | Lo: 71°FLo: 22°C | Hi: 85°FHi: 29°C | Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C | Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C |
| POP: 40% | POP: 40% | POP: 50% | POP: 40% | POP: 70% | POP: 50% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 130 PM EDT Wed Sep 09 2026 
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Issued: 128 PM EDT Wed Sep 9 2026
Key Messages
1) Heat and humidity will peak today.
2) Showers and scattered strong to potentially severe thunderstorms, with the threat for localized gusty to damaging winds for late today and early tonight, mainly across the NW third of PA.
Discussion
... KEY MESSAGE 1: Heat and humidity will peak today.
Increasingly southwesterly flow at the surface and aloft will carry warm and humid air into the region today, well in advance of a cold front moving southeast across the Upper Great Lakes.
A graduall...