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Fairmount, IL 7-Day Weather Forecast
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Fairmount Weather Forecast
Fairmount, IL Weather Forecast Date: 737 AM CDT Sat Sep 05 2026
Weather forecast for Fairmount, IL
Today Hi: 91°FHi: 33°C Lo: 65°F Lo: 18°C |
Rest of Today... Sunny. Highs in the lower 90s. Northwest winds 5 to 10 mph. Heat index values up to 105. |
| Sun Hi: 81°FHi: 27°C Lo: 60°F Lo: 16°C |
Sunday... Sunny. Not as warm with highs in the lower 80s. Northeast 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. East winds around 5 mph. |
| Tue Hi: 90°FHi: 32°C Lo: 71°F Lo: 22°C |
Tuesday... Mostly sunny. Highs around 90. |
| Wed Hi: 91°FHi: 33°C Lo: 69°F Lo: 21°C |
Wednesday... Mostly sunny. Highs in the lower 90s. |
Thu Hi: 85°FHi: 29°C Lo: 60°F Lo: 16°C |
Thursday... Mostly sunny. A chance of showers in the morning. Highs in the mid 80s. Chance of rain 30%. |
| Fri Hi: 85°FHi: 29°C |
Friday... Sunny. Highs in the mid 80s. |
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