Hazardous Weather Conditions
Current conditions at
Chicago/Waukegan Regional Airport (KUGN)
Lat: 42.43°NLon: 87.86°WElev: 709ft.
Fog/Mist
65°F
18°C
| Humidity | 100% |
| Wind Speed | Calm |
| Barometer | 30.01 in (1015.4 mb) |
| Dewpoint | 65°F (18°C) |
| Visibility | 4.00 mi |
| Last update | 14 Aug 2:51 am CDT |
Extended Forecast for
Zion IL
Overnight
Low: 70 °F
Cloudy
Friday
High: 74 °F
Mostly Cloudy
Friday Night
Low: 68 °F
Slight Chance
T-storms then
Showers
LikelySaturday
High: 78 °F
Showers
Saturday Night
Low: 70 °F
Chance
T-storms then
Showers
LikelySunday
High: 81 °F
Chance
ShowersSunday Night
Low: 66 °F
Partly Cloudy
Monday
High: 74 °F
Sunny
Monday Night
Low: 62 °F
Mostly Clear
Detailed Forecast
Overnight
Cloudy, with a steady temperature around 70. East wind around 10 mph.
Friday
Mostly cloudy, with a high near 74. East wind 10 to 15 mph.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 68. Northeast wind 5 to 10 mph becoming southeast after midnight. Winds could gust as high as 15 mph. 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 78. Southeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Saturday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 70. South wind 5 to 10 mph becoming west after midnight. Chance of precipitation is 60%.
Sunday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.
Sunday Night
Partly cloudy, with a low around 66.
Monday
Sunny, with a high near 74.
Monday Night
Mostly clear, with a low around 62.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 66.
Wednesday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 76.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 62.
Thursday
Mostly sunny, with a high near 72.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Zion IL
42.45°N 87.81°W
42.45°N 87.81°W
1:46 am CDT Aug 14, 2026
3am CDT Aug 14, 2026-6pm CDT Aug 20, 2026
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