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Mannheim School, IL Weather Forecast
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| REST OF TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
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| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Mostly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Chance of Showers | Chance of Showers |
| Lo: 65°FLo: 18°C | Hi: 71°FHi: 22°C | Lo: 69°FLo: 21°C | Hi: 75°FHi: 24°C | Lo: 65°FLo: 18°C | Hi: 75°FHi: 24°C | Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C | Lo: 69°FLo: 21°C | Hi: 75°FHi: 24°C | Lo: 61°FLo: 16°C | Hi: 71°FHi: 22°C |
| POP: 50% | POP: 20% | POP: 40% | POP: 40% | POP: 50% | POP: 60% | POP: 70% | POP: 70% | POP: 50% | POP: 40% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 911 PM CDT Tue Sep 15 2026 
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Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 649 PM CDT Tue Sep 15 2026
Key Messages
- Waves of showers and storms are expected in the general region through much of the week.
- While some areas may not see much rain at all, others may experience repeated downpours with a threat for localized flooding.
- The next few days will also be marked by high humidity.
- Another period of showers and storms is favored in the general region Friday through the weekend.
Discussion
... Issued at 134 PM CDT Tue Sep 15 2026
Per regional surface analyses charts, a stout 996mb surface low is cur...