Weather World
Jaycee Park Grayslake, IL 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Jaycee Park Grayslake, IL Weather Forecast
Jaycee Park Grayslake, IL Weather Forecast Date: 151 PM CDT Mon Aug 31 2026
The area/counties/county of: Lake County Il, including the cities of: Waukegan, Buffalo Grove, Mundelein, and Gurnee.or toggle through each period.
This Afternoon... Partly cloudy. Scattered showers and a slight chance of thunderstorms. Near steady temperature in the mid 80s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Chance of precipitation 50%.
Tonight... Mostly cloudy in the evening, then becoming partly cloudy. Scattered showers with a slight chance of thunderstorms early in the evening, then isolated showers late in the evening. Humid with lows in the lower 70s. Southwest winds 5 to 10 mph. Chance of precipitation 30%.
Tuesday... Partly cloudy. A chance of showers and thunderstorms in the afternoon. Humid with highs in the upper 80s. Southwest winds 5 to 10 mph, increasing to 10 to 15 mph in the afternoon. Chance of precipitation 30%. Heat index values up to 100.
Tuesday Night... Partly cloudy in the evening, then clearing. Humid with lows in the mid 70s. Southwest winds 5 to 10 mph.
Wednesday... Partly cloudy in the morning, then becoming mostly sunny. Humid with highs around 90. Southwest winds 5 to 10 mph, increasing to 10 to 15 mph in the afternoon.
Wednesday Night... Partly cloudy. A slight chance of showers after midnight. Lows in the lower 70s. Chance of precipitation 20%.
Thursday... Mostly cloudy. A chance of showers and thunderstorms, mainly in the morning. Highs in the mid 80s. Chance of precipitation 40%.
Thursday Night... Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly cloudy with a chance of showers and thunderstorms after midnight. Lows around 70. Chance of precipitation 50%.
Friday... Mostly cloudy in the morning, then becoming partly cloudy. A chance of showers in the morning. Highs in the mid 80s. Chance of precipitation 40%.
Friday Night... Partly cloudy. A chance of showers and thunderstorms after midnight. Lows in the upper 60s. Chance of precipitation 40%.
Saturday... Partly cloudy. Highs in the lower 80s.
Saturday Night... Partly cloudy. Lows in the mid 60s.
POP = Probability of Precipitation
Jaycee Park Grayslake Radar Loop
Use the map search tool if you want to place a location marker on the radar map...