Hazardous Weather Conditions
Current conditions at
Chicago/Waukegan Regional Airport (KUGN)
Lat: 42.43°NLon: 87.86°WElev: 709ft.
Fair
64°F
18°C
| Humidity | 87% |
| Wind Speed | S 10 mph |
| Barometer | 29.75 in (1007.0 mb) |
| Dewpoint | 60°F (16°C) |
| Visibility | 10.00 mi |
| Last update | 15 Apr 10:51 am CDT |
Extended Forecast for
McHenry IL
Flood Warning until further notice
Flood Watch April 15, 11:46am until April 16, 01:00am
NOW: Multiple hazards in effect
Click HERE for Details
Today
High: 74 °F
T-storms
LikelyTonight
Low: 58 °F
T-storms
Thursday
High: 68 °F
Showers
LikelyThursday Night
Low: 50 °F
Slight Chance
T-storms then
Mostly CloudyFriday
High: 76 °F
Partly Sunny
Friday Night
Low: 49 °F
Showers
Saturday
High: 62 °F
Chance
ShowersSaturday Night
Low: 33 °F
Partly Cloudy
Detailed Forecast
Today
Showers and thunderstorms likely, mainly after 4pm. Cloudy, with a high near 74. Southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then a chance of showers and thunderstorms after 4am. Low around 58. South wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 7am. Cloudy, then gradually becoming mostly sunny, with a high near 68. Southwest wind 5 to 10 mph becoming north northwest in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A slight chance of thunderstorms before 7pm. Partly cloudy, with a low around 50. Southeast wind around 5 mph. Chance of precipitation is 10%.
Friday
Partly sunny, with a high near 76. South southeast wind 5 to 15 mph, with gusts as high as 25 mph.
Friday Night
Showers and possibly a thunderstorm. Low around 49. Chance of precipitation is 90%.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 62. Chance of precipitation is 40%.
Saturday Night
Partly cloudy, with a low around 33.
Sunday
Mostly sunny, with a high near 50.
Sunday Night
Patchy frost after 2am. Otherwise, partly cloudy, with a low around 31.
Monday
Patchy frost. Otherwise, sunny, with a high near 59.
Monday Night
Partly cloudy, with a low around 45.
Tuesday
Mostly sunny, with a high near 69.
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
11:36 am CDT Apr 15, 2026
11am CDT Apr 15, 2026-6pm CDT Apr 21, 2026
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