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Castleton, IL 7-Day Weather Forecast
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Castleton Weather Forecast
Castleton, IL Weather Forecast Date: 127 AM CDT Sat Sep 05 2026
Weather forecast for Castleton, IL
Tonight Lo: 75°F Lo: 24°C |
Tonight... Mostly clear. Near steady temperature in the mid 70s. Light and variable winds. |
Sat Hi: 90°FHi: 32°C Lo: 65°F Lo: 18°C |
Saturday... Sunny with highs around 90. North winds 5 to 10 mph. Heat index values up to 102. |
| Sun Hi: 81°FHi: 27°C Lo: 61°F Lo: 16°C |
Sunday... Mostly sunny. Highs in the lower 80s. East winds 5 to 10 mph. |
| Labor Day Hi: 81°FHi: 27°C Lo: 61°F Lo: 16°C |
Labor Day... Sunny. Highs in the lower 80s. |
Tue Hi: 90°FHi: 32°C Lo: 71°F Lo: 22°C |
Tuesday... Partly cloudy. Lows in the lower 60s. Highs around 90. |
| Wed Hi: 89°FHi: 32°C Lo: 61°F Lo: 16°C |
Wednesday... Partly cloudy. Lows in the lower 70s. Highs in the upper 80s. |
| Thu Hi: 85°FHi: 29°C Lo: 61°F Lo: 16°C |
Thursday... Partly cloudy. Highs in the mid 80s. Lows in the lower 60s. |
| Fri Hi: 85°FHi: 29°C Lo: 61°F Lo: 16°C |
Friday... Partly cloudy. Highs in the mid 80s. Lows in the lower 60s. |
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