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Barr Park Weather Forecast
| REST OF TONIGHT | SUNDAY | SUNDAY NIGHT | COLUMBUS DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
 |  |  | | | |  |  | | |  |  |
| Mostly Clear | Sunny | Partly Cloudy | Sunny | Clear | Sunny | Chance of Showers | Showers | Showers | Showers | Chance of T-Storm | Partly Sunny |
| Lo: 51°FLo: 11°C | Hi: 85°FHi: 29°C | Lo: 65°FLo: 18°C | Hi: 91°FHi: 33°C | Lo: 71°FLo: 22°C | Hi: 90°FHi: 32°C | Lo: 65°FLo: 18°C | Hi: 79°FHi: 26°C | Lo: 60°FLo: 16°C | Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C | Hi: 69°FHi: 21°C |
| POP: 50% | POP: 70% | POP: 70% | POP: 60% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1237 AM CDT Sun Oct 11 2026 
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Issued: 1215 AM CDT Sun Oct 11 2026
Key Messages
- There is a diminishing threat of rain from the remnants of Isaias tonight into Sunday in our forecast area, with rain chances (20-30%) confined to a smaller portion of southeast Illinois.
- Near-record warmth arrives Monday, October 12, with afternoon high temperatures surging into the upper 80s to lower 90s. Tuesday looks equally as warm for our counties south of I-72.
- An extended period of rain chances is on track Tuesday night through Thursday. Severe weather potential is uncertain ...