Current conditions at
Chicago/Waukegan Regional Airport (KUGN)
Lat: 42.43°NLon: 87.86°WElev: 709ft.
Fair
31°F
-1°C
| Humidity | 61% |
| Wind Speed | E 7 mph |
| Barometer | 30.43 in (1031.8 mb) |
| Dewpoint | 19°F (-7°C) |
| Visibility | 10.00 mi |
| Wind Chill | 24°F (-4°C) |
| Last update | 7 Apr 5:51 pm CDT |
Extended Forecast for
Grayslake IL
Tonight
Low: 28 °F
Mostly Cloudy
then Chance
Wintry MixWednesday
High: 65 °F
Breezy.
Slight Chance
Showers then
Mostly SunnyWednesday Night
Low: 48 °F
Breezy.
Chance
Showers then
Showers
LikelyThursday

High: 62 °F
Mostly Sunny
Thursday Night

Low: 40 °F
Showers
Friday

High: 52 °F
Chance
ShowersFriday Night

Low: 35 °F
Partly Cloudy
Saturday

High: 56 °F
Mostly Sunny
Saturday Night
Low: 46 °F
Mostly Cloudy
then Chance
Showers
Detailed Forecast
Tonight
A chance of snow showers after 2am, mixing with rain after 4am. Increasing clouds, with a low around 28. East southeast wind 10 to 15 mph. Chance of precipitation is 30%.
Wednesday
A 10 percent chance of showers before 7am. Cloudy through mid morning, then gradual clearing, with a high near 65. Breezy, with a south wind 15 to 25 mph, with gusts as high as 35 mph.
Wednesday Night
Showers likely, mainly after 1am. Increasing clouds, with a low around 48. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Mostly sunny, with a high near 62. West wind around 10 mph, with gusts as high as 20 mph.
Thursday Night
Showers. Low around 40. North wind around 5 mph becoming east northeast in the evening. Chance of precipitation is 80%.
Friday
A 30 percent chance of showers before 1pm. Mostly cloudy, with a high near 52.
Friday Night
Partly cloudy, with a low around 35.
Saturday
Mostly sunny, with a high near 56.
Saturday Night
A chance of showers after 1am. Mostly cloudy, with a low around 46.
Sunday
A chance of showers. Mostly cloudy, with a high near 76.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 61.
Monday
A chance of showers. Mostly cloudy, with a high near 77.
Monday Night
Showers likely. Mostly cloudy, with a low around 48.
Tuesday
Showers likely. Mostly cloudy, with a high near 66.
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
3:11 pm CDT Apr 7, 2026
6pm CDT Apr 7, 2026-6pm CDT Apr 14, 2026


