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Courthouse Square, IL 7-Day Weather Forecast
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Courthouse Square Weather Forecast
Courthouse Square, IL Weather Forecast Date: 142 PM CDT Thu Sep 17 2026
Weather forecast for Courthouse Square, IL
Today Hi: 89°FHi: 32°C Lo: 69°F Lo: 21°C |
This Afternoon... Mostly sunny. Near steady temperature in the upper 80s. West winds around 5 mph. Heat index values up to 101. |
Fri Hi: 80°FHi: 27°C Lo: 69°F Lo: 21°C |
Friday... Partly sunny with a 50% chance of showers. Highs around 80. East winds 5 to 10 mph. |
Sat Hi: 85°FHi: 29°C Lo: 69°F Lo: 21°C |
Saturday... Mostly sunny in the morning, then becoming mostly cloudy. A chance of thunderstorms in the morning. A chance of showers. Humid with highs in the mid 80s. South winds 5 to 10 mph. Chance of rain 50%. |
| Sun Hi: 75°FHi: 24°C Lo: 61°F Lo: 16°C |
Sunday... Showers likely in the morning, then a chance of showers and thunderstorms in the afternoon. Cooler with highs in the mid 70s. Chance of rain 70%. |
Mon Hi: 69°FHi: 21°C Lo: 59°F Lo: 15°C |
Monday... Showers likely, mainly in the morning. Highs in the upper 60s. Chance of rain 70%. |
Tue Hi: 65°FHi: 18°C Lo: 51°F Lo: 11°C |
Tuesday... Partly sunny. Highs in the mid 60s. |
Wed Hi: 70°FHi: 21°C Lo: 51°F Lo: 11°C |
Wednesday... Partly cloudy. Lows in the lower 50s. Highs around 70. |
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