Hazardous Weather Conditions
Current conditions at
Chicago/Waukegan Regional Airport (KUGN)
Lat: 42.43°NLon: 87.86°WElev: 709ft.
Overcast
71°F
22°C
| Humidity | 90% |
| Wind Speed | SE 7 mph |
| Barometer | 29.96 in (1013.6 mb) |
| Dewpoint | 68°F (20°C) |
| Visibility | 10.00 mi |
| Last update | 13 Aug 5:51 pm CDT |
Extended Forecast for
Zion IL
Tonight
Low: 67 °F
Showers
LikelyFriday
High: 76 °F
Chance
ShowersFriday Night
Low: 68 °F
Showers
LikelySaturday
High: 79 °F
Showers
Saturday Night
Low: 68 °F
Chance
T-storms then
Chance
ShowersSunday
High: 81 °F
Chance
T-stormsSunday Night
Low: 65 °F
Mostly Cloudy
Monday
High: 74 °F
Mostly Sunny
Monday Night
Low: 61 °F
Mostly Clear
Detailed Forecast
Tonight
Showers likely and possibly a thunderstorm before 10pm, then a chance of showers and thunderstorms between 10pm and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 67. East northeast wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A 30 percent chance of showers, mainly before 8am. Mostly cloudy, with a high near 76. East wind around 10 mph, with gusts as high as 15 mph.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 68. Northeast wind around 10 mph becoming east southeast after midnight. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers and possibly a thunderstorm. High near 79. Southeast wind 10 to 15 mph. Chance of precipitation is 80%.
Saturday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 68. South southwest wind 5 to 10 mph becoming west after midnight. Chance of precipitation is 50%.
Sunday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 81.
Sunday Night
Mostly cloudy, with a low around 65.
Monday
Mostly sunny, with a high near 74.
Monday Night
Mostly clear, with a low around 61.
Tuesday
Mostly sunny, with a high near 77.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 66.
Wednesday
A chance of showers. Mostly cloudy, with a high near 78.
Wednesday Night
Mostly cloudy, with a low around 63.
Thursday
Mostly sunny, with a high near 74.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Zion IL
42.45°N 87.84°W
42.45°N 87.84°W
2:31 pm CDT Aug 13, 2026
6pm CDT Aug 13, 2026-6pm CDT Aug 20, 2026
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