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Mercer Weather Forecast
Mercer, IL Weather Forecast Date: 1136 PM CDT Sun Oct 11 2026
Weather forecast for Mercer, IL
Tonight Lo: 65°F Lo: 18°C |
Tonight... Partly cloudy and not as cool. Near steady temperature in the mid 60s. South winds 5 to 10 mph with gusts up to 20 mph. |
Columbus Day Hi: 89°FHi: 32°C Lo: 70°F Lo: 21°C |
Columbus Day... Mostly sunny. Highs in the upper 80s. Southwest winds 10 to 15 mph with gusts up to 25 mph. |
Tue Hi: 85°FHi: 29°C Lo: 61°F Lo: 16°C |
Tuesday... Sunny. A chance of showers in the afternoon. Highs in the mid 80s. West winds 5 to 10 mph. Chance of rain 30%. |
| Wed Hi: 71°FHi: 22°C Lo: 59°F Lo: 15°C |
Wednesday... Showers likely in the morning, then partly sunny in the afternoon. Not as warm with highs in the lower 70s. Chance of rain 60%. |
| Thu Hi: 69°FHi: 21°C Lo: 50°F Lo: 10°C |
Thursday... Showers. Highs in the upper 60s. Chance of rain 80%. |
Fri Hi: 59°FHi: 15°C Lo: 39°F Lo: 4°C |
Friday... Partly sunny and breezy. Highs in the upper 50s. |
| Sat Hi: 55°FHi: 13°C Lo: 39°F Lo: 4°C |
Saturday... Sunny. Highs in the mid 50s. |
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