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Grubb School Weather Forecast
| TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY |
 |  |  |  |  | | |  | | |  |  |
| Chance of Showers | Chance of Showers | Partly Cloudy | Mostly Cloudy | Chance of Showers | Chance of Showers | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Sunny |
| Lo: 51°FLo: 11°C | Hi: 61°FHi: 16°C | Lo: 49°FLo: 9°C | Hi: 61°FHi: 16°C | Lo: 50°FLo: 10°C | Hi: 61°FHi: 16°C | Lo: 49°FLo: 9°C | Hi: 61°FHi: 16°C | Lo: 49°FLo: 9°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 71°FHi: 22°C |
| POP: 20% | POP: 20% | POP: 40% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 357 PM EDT Sun Sep 20 2026 
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Issued: 400 PM EDT Sun Sep 20 2026
Key Messages
- Periods of rain this morning, with lingering rain chances then focused mainly south of I-96 this afternoon.
- Seasonably cool conditions will persist into the middle of week.
- Areas of showers are possible again Tuesday night into Wednesday.
Discussion
...
Showers continue to dissipate as expected from north to south as drier air filters into the low levels. This process is the result of split flow moving in aloft and 1028 mb surface high pressure building out of central Ontario. A wind sh...