Hazardous Weather Conditions
Current conditions at
Chicago/Waukegan Regional Airport (KUGN)
Lat: 42.43°NLon: 87.86°WElev: 709ft.
Overcast
73°F
23°C
| Humidity | 84% |
| Wind Speed | NE 8 mph |
| Barometer | 30.11 in (1018.5 mb) |
| Dewpoint | 68°F (20°C) |
| Visibility | 10.00 mi |
| Last update | 14 Aug 6:51 pm CDT |
Extended Forecast for
McHenry IL
Tonight
Low: 67 °F
Chance
Showers then
Showers
LikelySaturday
High: 83 °F
Showers
Likely then
Chance
ShowersSaturday Night
Low: 71 °F
Mostly Cloudy
then Chance
T-stormsSunday
High: 83 °F
Slight Chance
T-stormsSunday Night
Low: 62 °F
Partly Cloudy
Monday
High: 80 °F
Sunny
Monday Night
Low: 60 °F
Mostly Clear
Tuesday
High: 81 °F
Mostly Sunny
Tuesday Night
Low: 64 °F
Chance
T-storms then
Showers
Likely
Detailed Forecast
Tonight
A chance of showers before midnight, then a chance of showers and thunderstorms between midnight and 4am, then showers likely and possibly a thunderstorm 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.
Saturday
Showers and thunderstorms likely, mainly before 1pm. Cloudy, with a high near 83. South southeast wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 71. West southwest wind 5 to 10 mph.
Sunday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 83. West northwest wind around 10 mph, with gusts as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 62. Northwest wind 5 to 10 mph.
Monday
Sunny, with a high near 80.
Monday Night
Mostly clear, with a low around 60.
Tuesday
Mostly sunny, with a high near 81.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64.
Wednesday
A chance of showers before 1pm. Mostly cloudy, with a high near 78.
Wednesday Night
Partly cloudy, with a low around 59.
Thursday
Mostly sunny, with a high near 74.
Thursday Night
Mostly cloudy, with a low around 58.
Friday
Partly sunny, with a high near 75.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
McHenry IL
42.32°N 88.26°W
42.32°N 88.26°W
2:40 pm CDT Aug 14, 2026
6pm CDT Aug 14, 2026-6pm CDT Aug 21, 2026
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