Current conditions at
Chicago/Waukegan Regional Airport (KUGN)
Lat: 42.43°NLon: 87.86°WElev: 709ft.
A Few Clouds
23°F
-5°C
| Humidity | 74% |
| Wind Speed | NW 5 mph |
| Barometer | 30.28 in (1027.0 mb) |
| Dewpoint | 16°F (-9°C) |
| Visibility | 10.00 mi |
| Wind Chill | 17°F (-8°C) |
| Last update | 12 Feb 6:51 am CST |
Extended Forecast for
Grayslake IL
Today
High: 39 °F
Decreasing
CloudsTonight
Low: 24 °F
Partly Cloudy
Friday
High: 49 °F
Sunny
Friday Night
Low: 29 °F
Mostly Clear
Saturday
High: 50 °F
Partly Sunny
Saturday Night
Low: 33 °F
Mostly Cloudy
Sunday
High: 52 °F
Sunny
Sunday Night
Low: 31 °F
Partly Cloudy
Washington's Birthday
High: 53 °F
Partly Sunny
Detailed Forecast
Today
Mostly cloudy, then gradually becoming sunny, with a high near 39. North wind around 5 mph becoming east southeast in the afternoon.
Tonight
Partly cloudy, with a low around 24. East southeast wind around 5 mph becoming south southwest after midnight.
Friday
Sunny, with a high near 49. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Friday Night
Mostly clear, with a low around 29. West southwest wind around 5 mph becoming calm after midnight.
Saturday
Partly sunny, with a high near 50. Calm wind becoming south around 5 mph in the morning.
Saturday Night
Mostly cloudy, with a low around 33.
Sunday
Sunny, with a high near 52.
Sunday Night
Partly cloudy, with a low around 31.
Washington's Birthday
Partly sunny, with a high near 53.
Monday Night
Mostly cloudy, with a low around 38.
Tuesday
Mostly cloudy, with a high near 53.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 43.
Wednesday
A chance of rain. Mostly sunny, with a high near 56.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Grayslake IL
42.35°N 88.02°W
42.35°N 88.02°W
4:31 am CST Feb 12, 2026
7am CST Feb 12, 2026-6pm CST Feb 18, 2026
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