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Village of Grayslake, ILGrayslake, IL 7-Day Weather Forecast
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Grayslake Weather Forecast
Grayslake, IL Weather Forecast Date: 901 PM CDT Sat Sep 19 2026
Weather forecast for Grayslake, IL
Tonight Lo: 65°F Lo: 18°C |
Tonight... Showers. A chance of thunderstorms in the late evening and early morning. A slight chance of thunderstorms late. Patchy fog after midnight. Some thunderstorms May produce heavy rainfall in the late evening and early morning. Some thunderstorms May produce heavy rainfall late. Near steady temperature in the mid 60s. East winds around 5 mph, increasing to northeast 10 to 15 mph after midnight. Chance of precipitation near 100%. |
Sun Hi: 65°FHi: 18°C Lo: 55°F Lo: 13°C |
Sunday... Cloudy. Patchy fog early in the morning. Showers likely early in the morning, then a chance of showers in the late morning and early afternoon. A slight chance of showers late. Breezy. Near steady temperature in the mid 60s. Northeast winds 15 to 20 mph with gusts up to 30 mph. Chance of precipitation 70%. |
| Mon Hi: 65°FHi: 18°C Lo: 51°F Lo: 11°C |
Monday... Cloudy. A chance of showers in the morning. Highs in the mid 60s. East winds 15 to 20 mph with gusts up to 25 mph. Chance of precipitation 40%. |
Tue Hi: 61°FHi: 16°C Lo: 51°F Lo: 11°C |
Tuesday... Mostly cloudy. A slight chance of showers in the morning. Highs in the lower 60s. Chance of precipitation 20%. |
| Wed Hi: 61°FHi: 16°C Lo: 51°F Lo: 11°C |
Wednesday... Mostly cloudy. A slight chance of showers in the morning. Highs in the lower 60s. Chance of precipitation 20%. |
Thu Hi: 65°FHi: 18°C Lo: 51°F Lo: 11°C |
Thursday... Mostly cloudy. Highs in the mid 60s. |
| Fri Hi: 69°FHi: 21°C Lo: 55°F Lo: 13°C |
Friday... Mostly cloudy. Highs in the upper 60s. |
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