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Grayslake High School, IL 7-Day Night Weather Forecast
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Grayslake High School, IL Weather Forecast
Grayslake High School, IL Weather Forecast Date: 341 AM CDT Sun Aug 23 2026
The area/counties/county of: Lake County Il, including the cities of: Waukegan, Buffalo Grove, Mundelein, and Gurnee.or toggle through each period.
Early This Morning... Clear. Temperatures in the upper 50s. Northwest winds 5 to 10 mph.
Today... Sunny in the morning, then becoming partly cloudy. Highs in the mid 70s. Northwest winds 5 to 10 mph.
Tonight... Mostly clear. Lows in the mid 50s. Northwest winds 5 to 10 mph.
Monday... Partly cloudy in the morning, then becoming mostly sunny. Highs in the mid 70s. Northwest winds around 5 mph.
Monday Night... Mostly clear. Lows in the mid 50s. Southeast winds around 5 mph, becoming southwest after midnight.
Tuesday... Partly cloudy. Highs in the upper 70s. Southwest winds 5 to 10 mph.
Tuesday Night... Partly cloudy in the evening, then mostly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the lower 60s. Chance of precipitation 20%.
Wednesday... Partly cloudy. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of precipitation 50%.
Wednesday Night... Partly cloudy in the evening, then becoming mostly clear. Lows in the lower 60s.
Thursday... Mostly sunny in the morning, then becoming partly cloudy. Highs around 80.
Thursday Night... Mostly clear. Lows in the lower 60s.
Friday... Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 70s.
Friday Night... Mostly clear in the evening, then becoming partly cloudy. Lows around 60.
POP = Probability of Precipitation
Grayslake High School Radar Loop
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