Current conditions at
Chicago/Waukegan Regional Airport (KUGN)
Lat: 42.43°NLon: 87.86°WElev: 709ft.
Fair
59°F
15°C
| Humidity | 42% |
| Wind Speed | S 10 mph |
| Barometer | 30.32 in (1027.0 mb) |
| Dewpoint | 36°F (2°C) |
| Visibility | 10.00 mi |
| Last update | 18 Oct 5:51 pm CDT |
Extended Forecast for
Grayslake IL
Tonight
Low: 40 °F
Clear
Monday
High: 67 °F
Sunny
Monday Night
Low: 43 °F
Partly Cloudy
Tuesday
High: 66 °F
Decreasing
CloudsTuesday Night
Low: 46 °F
Mostly Clear
Wednesday
High: 69 °F
Sunny
Wednesday Night
Low: 49 °F
Mostly Clear
Thursday
High: 70 °F
Sunny
Thursday Night
Low: 51 °F
Mostly Clear
Detailed Forecast
Tonight
Clear, with a low around 40. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 67. Southwest wind around 5 mph.
Monday Night
Partly cloudy, with a low around 43. Southeast wind around 5 mph becoming calm.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 66. Calm wind becoming east southeast around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 46. East wind around 5 mph becoming calm.
Wednesday
Sunny, with a high near 69.
Wednesday Night
Mostly clear, with a low around 49.
Thursday
Sunny, with a high near 70.
Thursday Night
Mostly clear, with a low around 51.
Friday
Mostly sunny, with a high near 67.
Friday Night
Partly cloudy, with a low around 50.
Saturday
Mostly sunny, with a high near 68.
Saturday Night
Mostly cloudy, with a low around 52.
Sunday
Partly sunny, with a high near 70.
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
2:36 pm CDT Oct 18, 2026
5pm CDT Oct 18, 2026-6pm CDT Oct 25, 2026
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