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City of Gibson City, ILGibson City, IL Weather Forecast
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Gibson City Weather Forecast
| THIS AFTERNOON | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT |
 |  |  |  | | | | |  |  | | |
| Chance of T-Storm | Chance of T-Storm | Mostly Sunny | Mostly Clear | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Mostly Clear | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy |
| Hi: 79°FHi: 26°C | Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C | Lo: 60°FLo: 16°C | Hi: 80°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C | Lo: 60°FLo: 16°C | Hi: 75°FHi: 24°C | Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C | Lo: 60°FLo: 16°C |
| POP: 70% | POP: 40% | POP: 20% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1217 PM CDT Wed Aug 19 2026 
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Issued: 1226 PM CDT Wed Aug 19 2026
Key Messages
- Scattered thunderstorms are likely this afternoon into this evening south of I-80, greatest coverage likely south of the Kankakee and Illinois Rivers.
- Storms this afternoon/evening will be capable of locally torrential downpours which could result in localized flash flood threat. In addition, isolated severe storms capable of large hail and damaging winds are possible too.
Discussion
... Issued at 340 AM CDT Wed Aug 19 2026
Residual low-level moisture early...