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Kosciuszko Park, IL Weather Forecast
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Kosciuszko Park Weather Forecast
| LATE THIS AFTERNOON | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT |
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| Chance of Showers | Chance of Showers | Chance of Showers | Mostly Clear | Mostly Sunny | Partly Cloudy | Partly Cloudy | Chance of Showers | Mostly Cloudy | Partly Cloudy | Mostly Cloudy | Mostly Cloudy |
| Hi: 85°FHi: 29°C | Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 80°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C | Lo: 69°FLo: 21°C | Hi: 89°FHi: 32°C | Lo: 71°FLo: 22°C | Hi: 90°FHi: 32°C | Lo: 75°FLo: 24°C |
| POP: 20% | POP: 20% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 311 PM CDT Wed Aug 26 2026 
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Issued: 144 PM CDT Wed Aug 26 2026
Key Messages
- Potential for strong to severe thunderstorms continues through mid-afternoon east of a Paxton, IL to Rensselaer, IN line.
- Warmer and more humid conditions are expected late this weekend into next week, with a couple chances for thunderstorms.
Discussion
... Issued at 144 PM CDT Wed Aug 26 2026
A cold front extending from the Kankakee River Valley in northwest Indiana to just northwest of Champaign will continue to generate a broken line of thunderstorms over the next hour or so before e...