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Hazardous Weather Conditions
Current conditions at
Chicago/Waukegan Regional Airport (KUGN)
Lat: 42.43°NLon: 87.86°WElev: 709ft.
Fog
38°F
3°C
| Humidity | 100% |
| Wind Speed | NE 3 mph |
| Barometer | 29.97 in (1015.8 mb) |
| Dewpoint | 38°F (3°C) |
| Visibility | 0.15 mi |
| Last update | 5 Mar 5:51 am CST |
Extended Forecast for
Grayslake IL
Dense Fog Advisory March 5, 06:54am until March 5, 03:00pm
NOW until 3:00pm Thu
Dense Fog Advisory
Today
High: 42 °F
Patchy
Drizzle and
Dense FogTonight
Low: 39 °F
Fog
Friday
High: 67 °F
Showers and
Fog then
Slight Chance
T-storms and
Patchy FogFriday Night
Low: 54 °F
Chance
T-storms then
Showers and
BreezySaturday
High: 58 °F
Breezy.
Chance
Showers then
Mostly SunnySaturday Night
Low: 35 °F
Mostly Clear
Sunday
High: 60 °F
Sunny then
Sunny and
BreezySunday Night
Low: 46 °F
Mostly Clear
Detailed Forecast
Today
Patchy drizzle before 2pm. Widespread dense fog, mainly before 3pm. Otherwise, cloudy, with a high near 42. North northeast wind around 5 mph.
Tonight
Widespread fog, mainly after midnight. Otherwise, cloudy, with a low around 39. North northeast wind around 5 mph becoming southeast after midnight.
Friday
A slight chance of showers before 9am, then showers and possibly a thunderstorm between 9am and noon, then a slight chance of showers and thunderstorms after noon. Widespread fog, mainly before 9am. High near 67. Southeast wind 5 to 15 mph becoming south southwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Low around 54. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
Saturday
A 30 percent chance of showers before 9am. Partly sunny, with a high near 58. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph.
Saturday Night
Mostly clear, with a low around 35.
Sunday
Sunny, with a high near 60. Breezy.
Sunday Night
Mostly clear, with a low around 46.
Monday
Sunny, with a high near 68.
Monday Night
Partly cloudy, with a low around 46.
Tuesday
Showers likely. Partly sunny, with a high near 63.
Tuesday Night
Showers. Cloudy, with a low around 40.
Wednesday
Rain likely. Mostly cloudy, with a high near 50.
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
5:21 am CST Mar 5, 2026
6am CST Mar 5, 2026-6pm CDT Mar 11, 2026
Additional Resources
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Hourly Weather Forecast
