Hazardous Weather Conditions
Current conditions at
Chicago/Waukegan Regional Airport (KUGN)
Lat: 42.43°NLon: 87.86°WElev: 709ft.
Partly Cloudy
62°F
17°C
| Humidity | 22% |
| Wind Speed | SW 15 mph |
| Barometer | 30.07 in (1018.3 mb) |
| Dewpoint | 23°F (-5°C) |
| Visibility | 10.00 mi |
| Last update | 29 Mar 2:51 pm CDT |
Extended Forecast for
McHenry IL
This Afternoon

High: 63 °F
Mostly Cloudy
Tonight

Low: 46 °F
Partly Cloudy
Monday

High: 73 °F
Mostly Sunny
Monday Night

Low: 61 °F
Chance
T-stormsTuesday

High: 74 °F
Showers and
BreezyTuesday Night

Low: 36 °F
Showers
Wednesday
High: 42 °F
Mostly Cloudy
then Slight
Chance
ShowersWednesday Night

Low: 33 °F
Showers
Likely and
BreezyThursday

High: 47 °F
Showers
Likely and
Breezy
Detailed Forecast
This Afternoon
Mostly cloudy, with a high near 63. South southwest wind around 15 mph, with gusts as high as 25 mph.
Tonight
Partly cloudy, with a low around 46. South southwest wind around 10 mph, with gusts as high as 15 mph.
Monday
Mostly sunny, with a high near 73. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Monday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Increasing clouds, with a low around 61. East southeast wind 10 to 15 mph becoming southwest after midnight. Winds could gust as high as 20 mph.
Tuesday
Showers and possibly a thunderstorm. High near 74. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm before 10pm, then showers likely. Low around 36. Chance of precipitation is 80%.
Wednesday
A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 42.
Wednesday Night
Showers likely, mainly after 1am. Cloudy, with a low around 33. Breezy.
Thursday
Showers likely. Cloudy, with a high near 47. Breezy.
Thursday Night
Showers likely, mainly before 1am. Cloudy, with a low around 35.
Friday
Mostly cloudy, with a high near 52.
Friday Night
A chance of showers. Mostly cloudy, with a low around 39.
Saturday
Showers likely. Cloudy, with a high near 64.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
McHenry IL
42.34°N 88.26°W
42.34°N 88.26°W
3:41 pm CDT Mar 29, 2026
3pm CDT Mar 29, 2026-6pm CDT Apr 4, 2026



