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Chemung, IL Weather Forecast
Chemung, IL Weather Forecast Date: 506 AM CDT Sun Oct 18 2026
The area/counties/county of: Mchenry, including the cities of: Crystal Lake, Algonquin, Mchenry, and Woodstock.or toggle through each period.
Today... Sunny. Highs around 60. Southwest winds 10 to 15 mph with gusts up to 25 mph.
Tonight... Clear. Lows in the upper 30s. South winds 5 to 10 mph.
Monday... Sunny. Highs in the mid 60s. Southwest winds around 5 mph.
Monday Night... Mostly clear. Lows in the lower 40s. Light and variable winds.
Tuesday... Mostly sunny. Highs in the upper 60s. East winds around 5 mph.
Tuesday Night... Clear. Lows in the mid 40s.
Wednesday... Sunny. Highs around 70.
Wednesday Night... Mostly clear. Lows in the upper 40s.
Thursday... Partly cloudy in the morning, then becoming mostly sunny. Highs in the lower 70s.
Thursday Night... Mostly clear. Lows in the upper 40s.
Friday... Mostly sunny. Highs in the lower 70s.
Friday Night... Partly cloudy. Lows in the upper 40s.
POP = Probability of Precipitation
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