Current conditions at
Chicago/Waukegan Regional Airport (KUGN)
Lat: 42.43°NLon: 87.86°WElev: 709ft.
Overcast
27°F
-3°C
| Humidity | 72% |
| Wind Speed | NW 13 G 22 mph |
| Barometer | 29.58 in (1002.8 mb) |
| Dewpoint | 19°F (-7°C) |
| Visibility | 10.00 mi |
| Wind Chill | 16°F (-9°C) |
| Last update | 25 Feb 6:51 am CST |
Extended Forecast for
Grayslake IL
Today
High: 32 °F
Mostly Sunny
Tonight
Low: 18 °F
Mostly Clear
Thursday
High: 42 °F
Mostly Sunny
Thursday Night
Low: 29 °F
Mostly Clear
Friday
High: 58 °F
Sunny then
Sunny and
BreezyFriday Night
Low: 28 °F
Partly Cloudy
Saturday
High: 36 °F
Mostly Cloudy
then Chance
SnowSaturday Night
Low: 20 °F
Mostly Cloudy
Sunday
High: 30 °F
Partly Sunny
Detailed Forecast
Today
Mostly sunny, with a high near 32. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
Mostly clear, with a low around 18. West northwest wind around 5 mph becoming calm after midnight. Winds could gust as high as 15 mph.
Thursday
Mostly sunny, with a high near 42. Light west wind becoming southwest 10 to 15 mph in the morning.
Thursday Night
Mostly clear, with a low around 29. Southwest wind 5 to 10 mph.
Friday
Sunny, with a high near 58. Breezy, with a southwest wind 10 to 20 mph.
Friday Night
Partly cloudy, with a low around 28.
Saturday
A 50 percent chance of snow after noon. Mostly cloudy, with a high near 36.
Saturday Night
Mostly cloudy, with a low around 20.
Sunday
Partly sunny, with a high near 30.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 20.
Monday
Partly sunny, with a high near 33.
Monday Night
Mostly cloudy, with a low around 21.
Tuesday
A chance of snow. Partly sunny, with a high near 39.
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
3:01 am CST Feb 25, 2026
7am CST Feb 25, 2026-6pm CST Mar 3, 2026
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