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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: 937 AM CDT Thu Oct 22 2026
Weather forecast for Eureka, IL
Today Hi: 75°FHi: 24°C Lo: 49°F Lo: 9°C |
Rest of Today... Sunny. Highs in the mid 70s. Light and variable winds. |
| Fri Hi: 75°FHi: 24°C Lo: 49°F Lo: 9°C |
Friday... Sunny. Highs in the mid 70s. Southeast winds around 5 mph. |
| Sat Hi: 75°FHi: 24°C Lo: 50°F Lo: 10°C |
Saturday... Mostly sunny. Highs in the mid 70s. South winds 5 to 10 mph. |
Sun Hi: 79°FHi: 26°C Lo: 50°F Lo: 10°C |
Sunday... Partly cloudy. Lows around 50. Highs in the upper 70s. |
| Sun Hi: 79°FHi: 26°C Lo: 49°F Lo: 9°C |
Sunday... Partly cloudy. Lows around 50. Highs in the upper 70s. |
Mon Hi: 75°FHi: 24°C Lo: 45°F Lo: 7°C |
Monday... Mostly cloudy. Highs in the mid 70s. Lows in the upper 40s. |
| Tue Hi: 69°FHi: 21°C Lo: 45°F Lo: 7°C |
Tuesday... Mostly cloudy. Highs in the upper 60s. Lows in the mid 40s. |
Eureka Radar Loop
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