Hazardous Weather Conditions
Current conditions at
Chicago/Waukegan Regional Airport (KUGN)
Lat: 42.43°NLon: 87.86°WElev: 709ft.
Fair
63°F
17°C
| Humidity | 76% |
| Wind Speed | S 6 mph |
| Barometer | 29.70 in (1004.7 mb) |
| Dewpoint | 55°F (13°C) |
| Visibility | 10.00 mi |
| Last update | 31 Mar 5:51 am CDT |
Extended Forecast for
McHenry IL
Today
High: 70 °F⇓
Showers and
BreezyTonight
Low: 34 °F
Showers
Likely then
Slight Chance
ShowersWednesday
High: 40 °F
Chance
ShowersWednesday Night
Low: 36 °F
Showers
Thursday
High: 67 °F
Showers and
BreezyThursday Night
Low: 46 °F
Showers
LikelyFriday
High: 64 °F
Partly Sunny
then Slight
Chance
ShowersFriday Night
Low: 44 °F
Chance
T-storms then
Showers
LikelySaturday
High: 63 °F
Showers
Likely
Detailed Forecast
Today
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2pm. Temperature rising to near 70 by noon, then falling to around 57 during the remainder of the day. Breezy, with a southwest wind 15 to 20 mph becoming north in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers likely before 10pm, then a slight chance of showers after 11pm. Mostly cloudy, with a low around 34. Northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
A 40 percent chance of showers. Mostly cloudy, with a high near 40. East northeast wind around 15 mph, with gusts as high as 25 mph.
Wednesday Night
Showers and possibly a thunderstorm. Low around 36. East wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%.
Thursday
Showers and possibly a thunderstorm. High near 67. Breezy, with an east wind 15 to 20 mph becoming south in the afternoon. Winds could gust as high as 35 mph. Chance of precipitation is 100%.
Thursday Night
Showers likely and possibly a thunderstorm before 10pm, then showers likely between 10pm and 1am. Mostly cloudy, with a low around 46. Chance of precipitation is 70%.
Friday
A 20 percent chance of showers after 1pm. Partly sunny, with a high near 64.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 44.
Saturday
Showers likely. Mostly cloudy, with a high near 63.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 35.
Sunday
Mostly cloudy, with a high near 47.
Sunday Night
Partly cloudy, with a low around 29.
Monday
Mostly sunny, with a high near 51.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
McHenry IL
42.34°N 88.26°W
42.34°N 88.26°W
4:26 am CDT Mar 31, 2026
6am CDT Mar 31, 2026-6pm CDT Apr 6, 2026
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