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City of Hamilton, ILHamilton, IL 7-Day Weather Forecast
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Hamilton Weather Forecast
Hamilton, IL Weather Forecast Date: 541 PM CDT Thu Sep 03 2026
Weather forecast for Hamilton, IL
Tonight Lo: 75°F Lo: 24°C |
Tonight... Clear. Lows in the mid 70s. South winds 5 to 10 mph. Heat index values up to 103 early this evening. |
Fri Hi: 95°FHi: 35°C Lo: 71°F Lo: 22°C |
Friday... Sunny, hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 106. |
| Sat Hi: 95°FHi: 35°C Lo: 69°F Lo: 21°C |
Saturday... Sunny, hot with highs in the mid 90s. West winds around 5 mph, becoming north around 5 mph in the afternoon. Heat index values up to 106. |
| Sun Hi: 89°FHi: 32°C Lo: 69°F Lo: 21°C |
Sunday... Mostly clear. Highs in the upper 80s. Lows in the upper 60s. |
| Labor Day Hi: 89°FHi: 32°C Lo: 69°F Lo: 21°C |
Labor Day... Mostly sunny. Highs in the upper 80s. |
| Tue Hi: 95°FHi: 35°C Lo: 75°F Lo: 24°C |
Tuesday... Mostly sunny. Hot with highs in the mid 90s. |
| Wed Hi: 95°FHi: 35°C Lo: 71°F Lo: 22°C |
Wednesday... Mostly sunny. Hot with highs in the mid 90s. |
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