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Upper Basin Weather Forecast
| THIS AFTERNOON | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT |
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| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Partly Cloudy | Partly Cloudy | Chance of T-Storm | Thunderstorms | Thunderstorms | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm |
| Hi: 75°FHi: 24°C | Lo: 65°FLo: 18°C | Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C | Hi: 75°FHi: 24°C | Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C | Lo: 61°FLo: 16°C | Hi: 71°FHi: 22°C | Lo: 59°FLo: 15°C | Hi: 69°FHi: 21°C | Lo: 55°FLo: 13°C |
| POP: 30% | POP: 50% | POP: 50% | POP: 20% | POP: 90% | POP: 90% | POP: 70% | POP: 50% | POP: 50% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 228 PM EDT Wed Sep 16 2026 
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Issued: 321 PM EDT Wed Sep 16 2026
Key Messages
- 1 or 2 additional rounds of showers and storms are possible, mainly late tonight into Thursday morning. Heavy rain and associated flooding potential are the greatest concern, especially in areas that experienced heavy rain over the past 24 hours. Flood Watch in effect for parts of northern Indiana
- Dry and less humid conditions on Friday followed by renewed opportunties for rain and storms this weekend.
Discussion
... Issued at 212 PM EDT Wed Sep 16 2026
A small window of drier condition...