Weather WorldIlliopolis, IL 7-Day Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Illiopolis Weather Forecast
Illiopolis, IL Weather Forecast Date: 132 AM CDT Tue Oct 06 2026
Weather forecast for Illiopolis, IL
Tonight Lo: 50°F Lo: 10°C |
Tonight... Clear. Near steady temperature around 50. Southeast winds around 5 mph. |
Tue Hi: 79°FHi: 26°C Lo: 55°F Lo: 13°C |
Tuesday... Sunny. Highs in the upper 70s. South winds 5 to 10 mph. |
| Wed Hi: 85°FHi: 29°C Lo: 51°F Lo: 11°C |
Wednesday... Sunny. Highs in the mid 80s. West winds 5 to 10 mph. |
| Thu Hi: 79°FHi: 26°C Lo: 49°F Lo: 9°C |
Thursday... Mostly clear. Highs in the upper 70s. Lows in the upper 40s. |
| Fri Hi: 79°FHi: 26°C Lo: 49°F Lo: 9°C |
Friday... Mostly clear. Highs in the upper 70s. Lows in the upper 40s. |
| Fri Hi: 79°FHi: 26°C Lo: 55°F Lo: 13°C |
Friday... Mostly clear. Highs in the upper 70s. Lows in the upper 40s. |
| Sat Hi: 85°FHi: 29°C Lo: 59°F Lo: 15°C |
Saturday... Mostly clear. Lows in the mid 50s. Highs in the mid 80s. |
Sun Hi: 85°FHi: 29°C Lo: 59°F Lo: 15°C |
Sunday... Partly cloudy. Lows in the upper 50s. Highs in the mid 80s. |
Illiopolis Radar Loop
Use the map search tool if you want to place a location marker on the radar map...