Hazardous Weather Conditions
Current conditions at
Chicago/Waukegan Regional Airport (KUGN)
Lat: 42.43°NLon: 87.86°WElev: 709ft.
Fair and Breezy
69°F
21°C
| Humidity | 35% |
| Wind Speed | SW 24 G 37 mph |
| Barometer | 30.00 in (1016.0 mb) |
| Dewpoint | 40°F (4°C) |
| Visibility | 10.00 mi |
| Last update | 8 Apr 3:51 pm CDT |
Extended Forecast for
Grayslake IL
Tonight
Low: 49 °F
Breezy.
Slight Chance
Showers then
Showers
LikelyThursday
High: 63 °F
Chance
Showers then
Mostly SunnyThursday Night

Low: 41 °F
Showers
Friday

High: 52 °F
Showers
LikelyFriday Night

Low: 33 °F
Mostly Clear
Saturday

High: 54 °F
Mostly Sunny
Saturday Night

Low: 46 °F
Chance
ShowersSunday
High: 75 °F
Mostly Cloudy
then Chance
ShowersSunday Night

Low: 63 °F
Showers
Likely
Detailed Forecast
Tonight
A chance of showers, then showers likely and possibly a thunderstorm after 1am. Increasing clouds, with a low around 49. Breezy, with a south wind 10 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A 30 percent chance of showers before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 63. West wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Showers, mainly after 7pm. Low around 41. North northwest wind around 5 mph becoming east northeast after midnight. Winds could gust as high as 10 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Friday
Showers likely, mainly before 10am. Cloudy, then gradually becoming mostly sunny, with a high near 52. North wind 5 to 10 mph. Chance of precipitation is 60%.
Friday Night
Mostly clear, with a low around 33. East northeast wind around 5 mph.
Saturday
Mostly sunny, with a high near 54.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 46. Chance of precipitation is 40%.
Sunday
A chance of showers after 1pm. Mostly cloudy, with a high near 75.
Sunday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 63.
Monday
A chance of showers. Mostly cloudy, with a high near 77.
Monday Night
Showers likely. Mostly cloudy, with a low around 57.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 70.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 39.
Wednesday
A chance of showers. Mostly cloudy, with a high near 51.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Grayslake IL
42.35°N 88.02°W
42.35°N 88.02°W
2:41 pm CDT Apr 8, 2026
4pm CDT Apr 8, 2026-6pm CDT Apr 15, 2026



