Hazardous Weather Conditions
Current conditions at
Chicago/Waukegan Regional Airport (KUGN)
Lat: 42.43°NLon: 87.86°WElev: 709ft.
Fair
66°F
19°C
| Humidity | 65% |
| Wind Speed | S 12 G 22 mph |
| Barometer | 29.79 in (1008.3 mb) |
| Dewpoint | 54°F (12°C) |
| Visibility | 10.00 mi |
| Last update | 15 May 10:51 pm CDT |
Extended Forecast for
McHenry IL
Severe T-storm Watch until May 16, 05:00am
NOW until 5:00am Sat
Severe T-storm Watch
Tonight
Low: 60 °F
Showers
Saturday
High: 82 °F
Scattered
Showers then
Mostly SunnySaturday Night
Low: 58 °F
Slight Chance
T-stormsSunday
High: 84 °F
Chance
Showers then
Slight Chance
T-storms and
BreezySunday Night
Low: 65 °F
Mostly Clear
and Breezy
then Partly
CloudyMonday
High: 84 °F
Showers
Likely and
BreezyMonday Night
Low: 64 °F
Showers
Likely and
BreezyTuesday
High: 78 °F
Chance
Showers and
Breezy
Detailed Forecast
Tonight
A chance of showers and thunderstorms before 2am, then showers and possibly a thunderstorm between 2am and 5am, then a chance of showers and thunderstorms after 5am. Low around 60. South southeast wind around 10 mph becoming west after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Scattered showers and thunderstorms, mainly before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 82. South southeast wind around 10 mph becoming west in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 30%.
Saturday Night
A 20 percent chance of showers and thunderstorms after 11pm. Mostly cloudy, with a low around 58. North northeast wind around 5 mph becoming south after midnight.
Sunday
A 30 percent chance of showers and thunderstorms, mainly before 10am. Partly sunny, with a high near 84. Breezy, with an east southeast wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Sunday Night
Partly cloudy, with a low around 65. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.
Monday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 84. Breezy. Chance of precipitation is 70%.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. Breezy. Chance of precipitation is 60%.
Tuesday
A chance of showers. Partly sunny, with a high near 78. Breezy.
Tuesday Night
A chance of showers before 1am. Partly cloudy, with a low around 50.
Wednesday
Mostly sunny, with a high near 65.
Wednesday Night
Partly cloudy, with a low around 45.
Thursday
Mostly sunny, with a high near 66.
Thursday Night
Partly cloudy, with a low around 48.
Friday
Mostly sunny, with a high near 71.
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
10:36 pm CDT May 15, 2026
11pm CDT May 15, 2026-6pm CDT May 22, 2026
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