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City of Marengo, ILMarengo, IL 7-Day Night Weather Forecast
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Marengo, IL Weather Forecast
Marengo, IL Weather Forecast Date: 446 AM CST Wed Nov 04 2026
The area/counties/county of: Mchenry, including the cities of: Crystal Lake, Algonquin, Mchenry, and Woodstock.or toggle through each period.
Early This Morning... Cloudy. A chance of showers. Temperatures in the lower 60s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of precipitation 50%.
Today... Mostly cloudy. Scattered showers in the morning. Patchy drizzle. Isolated showers in the afternoon. Breezy. Highs in the lower 60s. Temperature falling into the mid 50s in the afternoon. Southwest winds 10 to 15 mph with gusts up to 30 mph. Chance of precipitation 40%.
Tonight... Mostly cloudy. Isolated sprinkles with patchy very light drizzle in the evening. Isolated showers late. Lows in the mid 40s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Chance of precipitation 20%.
Thursday... Cloudy. A chance of showers. Highs in the mid 50s. West winds 10 to 15 mph with gusts up to 25 mph. Chance of precipitation 40%.
Thursday Night... Mostly cloudy. A chance of showers in the evening. Lows in the upper 30s. North winds around 10 mph. Chance of precipitation 50%.
Friday... Mostly cloudy. Highs in the upper 40s. North winds 10 to 15 mph. Gusts up to 25 mph in the afternoon.
Friday Night... Partly cloudy in the evening, then clearing. Lows in the lower 30s.
Saturday... Mostly sunny. Highs in the lower 50s.
Saturday Night... Partly cloudy in the evening, then becoming mostly clear. Lows in the lower 30s.
Sunday... Mostly sunny. Highs in the mid 50s.
Sunday Night... Mostly clear. Lows in the mid 30s.
Monday... Mostly sunny. Highs around 60.
Monday Night... Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 30s.
POP = Probability of Precipitation
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