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Jefferson School Weather Forecast
| THIS AFTERNOON | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT |
 |  | | |  | |  |  |  | | | |
| Partly Sunny | Mostly Cloudy | Partly Sunny | Mostly Cloudy | Showers | Showers | Mostly Sunny | Clear | Partly Cloudy | Clear | Mostly Sunny | Clear |
| Hi: 75°FHi: 24°C | Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 71°FHi: 22°C | Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C | Lo: 49°FLo: 9°C | Hi: 70°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 61°FHi: 16°C | Lo: 41°FLo: 5°C |
| POP: 100% | POP: 100% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1243 PM EDT Wed Sep 30 2026 
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Issued: 118 PM EDT Wed Sep 30 2026
Key Messages
1) Shower chances tonight north of Pittsburgh, then dry and warm Thursday. Showers return with a Friday cold front.
2) Cooler and mainly dry from this weekend into early next week
Discussion
... KEY MESSAGE 1... A ridge of high pressure will maintain dry weather into this evening. Much of the area should remain dry tonight, though a weak shortwave is progged to advance eastward tonight, crossing the Lower Great Lakes region. This wave, and warm advection, should produce scattered shower...