Hazardous Weather Conditions
Current conditions at
Chicago/Waukegan Regional Airport (KUGN)
Lat: 42.43°NLon: 87.86°WElev: 709ft.
Overcast
50°F
10°C
| Humidity | 86% |
| Wind Speed | W 10 G 26 mph |
| Barometer | 29.84 in (1010.6 mb) |
| Dewpoint | 46°F (8°C) |
| Visibility | 10.00 mi |
| Wind Chill | 46°F (8°C) |
| Last update | 3 Apr 3:51 am CDT |
Extended Forecast for
McHenry IL
Today

High: 61 °F
Mostly Cloudy
Tonight
Low: 40 °F
T-storms
Likely then
T-stormsSaturday

High: 58 °F
Chance
Showers and
BreezySaturday Night
Low: 33 °F
Mostly Cloudy
and Breezy
then Mostly
CloudySunday

High: 51 °F
Partly Sunny
Sunday Night

Low: 35 °F
Partly Cloudy
Monday

High: 48 °F
Mostly Sunny
Monday Night

Low: 25 °F
Partly Cloudy
Tuesday

High: 44 °F
Mostly Sunny
Detailed Forecast
Today
Mostly cloudy, with a high near 61. West wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 20 mph.
Tonight
Showers and thunderstorms before 3am, then showers likely and possibly a thunderstorm between 3am and 4am, then a chance of showers after 4am. Low around 40. East wind 10 to 15 mph becoming south southeast after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
A chance of showers before 1pm, then a slight chance of showers after 4pm. Mostly cloudy, with a high near 58. Breezy, with a west southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Saturday Night
Mostly cloudy, with a low around 33. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday
Partly sunny, with a high near 51. West northwest wind around 15 mph, with gusts as high as 30 mph.
Sunday Night
Partly cloudy, with a low around 35.
Monday
Mostly sunny, with a high near 48.
Monday Night
Partly cloudy, with a low around 25.
Tuesday
Mostly sunny, with a high near 44.
Tuesday Night
Mostly cloudy, with a low around 30.
Wednesday
Mostly cloudy, with a high near 62.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 47.
Thursday
A chance of showers. Mostly cloudy, with a high near 63.
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
3:51 am CDT Apr 3, 2026
5am CDT Apr 3, 2026-6pm CDT Apr 9, 2026



