Round Grove, IL Weather Forecast
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Round Grove Weather Forecast
| THIS AFTERNOON | TONIGHT | COLUMBUS DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
| Sunny | Partly Cloudy | Sunny | Clear | Sunny | Showers | Chance of Showers | Mostly Cloudy | Showers | Chance of Showers | Partly Sunny | Clearing |
| Hi: 79°FHi: 26°C | Lo: 65°FLo: 18°C | Hi: 89°FHi: 32°C | Lo: 69°FLo: 21°C | Hi: 81°FHi: 27°C | Lo: 60°FLo: 16°C | Hi: 71°FHi: 22°C | Lo: 55°FLo: 13°C | Hi: 69°FHi: 21°C | Lo: 49°FLo: 9°C | Hi: 59°FHi: 15°C | Lo: 35°FLo: 2°C |
| POP: 70% | POP: 40% | POP: 70% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 126 PM CDT Sun Oct 11 2026 

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Issued: 153 PM CDT Sun Oct 11 2026
Key Messages
- Unseasonably warm conditions continue through Columbus Day, with near record temperatures Monday. These temperatures combined with breezy SSW winds will also result in an elevated risk for agricultural field fires south of I-80.
- A cool down the second half of the week with increasing rain chances, especially Wednesday night into Thursday.
- The potential for frost will be on the increase next weekend.
Aviation
/18Z TAFS THROUGH 18Z MONDAY/... Issued at 1232 PM CDT Sun Oct 11 2026
VFR cond...
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