Hazardous Weather Conditions
Current conditions at
Chicago/Waukegan Regional Airport (KUGN)
Lat: 42.43°NLon: 87.86°WElev: 709ft.
Partly Cloudy
56°F
13°C
| Humidity | 75% |
| Wind Speed | E 5 mph |
| Barometer | 29.92 in (1012.4 mb) |
| Dewpoint | 48°F (9°C) |
| Visibility | 10.00 mi |
| Last update | 17 May 10:51 am CDT |
Extended Forecast for
McHenry IL
Today
High: 81 °F
Scattered
Showers and
BreezyTonight
Low: 68 °F
Partly Cloudy
Monday
High: 83 °F
Showers
Likely and
BreezyMonday Night
Low: 66 °F
Chance
Showers then
Showers
Likely and
BreezyTuesday
High: 80 °F
Showers
Likely and
BreezyTuesday Night
Low: 47 °F
Mostly Cloudy
Wednesday
High: 62 °F
Mostly Sunny
Wednesday Night
Low: 42 °F
Partly Cloudy
Thursday
High: 61 °F
Mostly Sunny
Detailed Forecast
Today
Scattered showers and thunderstorms before 2pm, then isolated showers between 2pm and 3pm. Mostly cloudy, with a high near 81. Breezy, with a southeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.
Tonight
Partly cloudy, with a low around 68. South wind around 15 mph, with gusts as high as 25 mph.
Monday
A chance of showers and thunderstorms before 9am, then showers likely and possibly a thunderstorm between 9am and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 83. Breezy, with a south southwest wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Tuesday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Mostly cloudy, with a high near 80. Breezy, with a south southwest wind 20 to 25 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Tuesday Night
Mostly cloudy, with a low around 47.
Wednesday
Mostly sunny, with a high near 62.
Wednesday Night
Partly cloudy, with a low around 42.
Thursday
Mostly sunny, with a high near 61.
Thursday Night
Partly cloudy, with a low around 45.
Friday
Partly sunny, with a high near 67.
Friday Night
Mostly cloudy, with a low around 50.
Saturday
Partly sunny, with a high near 73.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
McHenry IL
42.36°N 88.26°W
42.36°N 88.26°W
10:26 am CDT May 17, 2026
11am CDT May 17, 2026-6pm CDT May 23, 2026
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