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Arrow, IL 7-Day Night Weather Forecast
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Arrow, IL Weather Forecast
Arrow, IL Weather Forecast Date: 621 PM CDT Tue Sep 08 2026
The area/counties/county of: Lake County Il, including the cities of: Waukegan, Buffalo Grove, Mundelein, and Gurnee.or toggle through each period.
Tonight... Mostly cloudy. Isolated showers after midnight. A slight chance of thunderstorms after midnight. Numerous showers late. Lows around 70. Southwest winds 5 to 10 mph. Chance of precipitation 70%.
Wednesday... Mostly cloudy. Numerous showers early in the morning. A slight chance of thunderstorms in the morning. Scattered showers late in the morning. Humid with highs in the upper 70s. West winds 5 to 10 mph. Chance of precipitation 70%.
Wednesday Night... Mostly cloudy. Lows in the lower 60s. West winds 5 to 10 mph.
Thursday... Partly cloudy in the morning, then clearing. Highs in the mid 70s. North winds 5 to 10 mph.
Thursday Night... Clear. Lows in the mid 50s. East winds around 5 mph, becoming south after midnight.
Friday... Sunny. Highs in the upper 70s.
Friday Night... Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 60s.
Saturday... Partly cloudy with a slight chance of showers in the morning, then mostly cloudy with a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of precipitation 30%.
Saturday Night... Mostly cloudy with a chance of showers in the evening, then partly cloudy after midnight. Lows in the lower 60s. Chance of precipitation 30%.
Sunday... Partly cloudy in the morning, then becoming mostly cloudy. A chance of showers. Highs in the mid 70s. Chance of precipitation 30%.
Sunday Night... Mostly cloudy with a chance of showers. Lows around 60. Chance of precipitation 40%.
Monday... Mostly cloudy with a chance of showers. Highs in the upper 70s. Chance of precipitation 50%.
Monday Night... Showers likely. Lows in the lower 60s. Chance of precipitation 60%.
POP = Probability of Precipitation
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