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City of Eureka, ILEureka, IL 7-Day Weather Forecast
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Eureka Weather Forecast
Eureka, IL Weather Forecast Date: 437 AM CDT Fri Sep 04 2026
Weather forecast for Eureka, IL
Today Hi: 95°FHi: 35°C Lo: 71°F Lo: 22°C |
Today... Sunny, hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 106. |
| Sat Hi: 91°FHi: 33°C Lo: 69°F Lo: 21°C |
Saturday... Sunny with highs in the lower 90s. Northwest winds 5 to 10 mph. Heat index values up to 103. |
| Sun Hi: 85°FHi: 29°C Lo: 61°F Lo: 16°C |
Sunday... Mostly sunny. Highs in the mid 80s. East winds 5 to 10 mph. |
| Labor Day Hi: 85°FHi: 29°C Lo: 65°F Lo: 18°C |
Labor Day... Mostly clear. Lows in the lower 60s. Highs in the mid 80s. |
Tue Hi: 91°FHi: 33°C Lo: 75°F Lo: 24°C |
Tuesday... Partly cloudy. Lows in the mid 60s. Highs in the lower 90s. |
| Wed Hi: 91°FHi: 33°C Lo: 71°F Lo: 22°C |
Wednesday... Mostly sunny. Highs in the lower 90s. |
| Thu Hi: 89°FHi: 32°C |
Thursday... Mostly sunny. Highs in the upper 80s. |
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