Hazardous Weather Conditions
Current conditions at
Chicago/Waukegan Regional Airport (KUGN)
Lat: 42.43°NLon: 87.86°WElev: 709ft.
Fair
33°F
1°C
| Humidity | 42% |
| Wind Speed | NW 8 mph |
| Barometer | 30.01 in (1016.8 mb) |
| Dewpoint | 12°F (-11°C) |
| Visibility | 10.00 mi |
| Wind Chill | 26°F (-3°C) |
| Last update | 28 Feb 4:51 am CST |
Extended Forecast for
McHenry IL
Today

High: 30 °F
Chance Snow
Tonight
Low: 19 °F
Slight Chance
Snow then
Mostly CloudySunday

High: 31 °F
Partly Sunny
Sunday Night

Low: 18 °F
Partly Cloudy
Monday

High: 40 °F
Mostly Sunny
Monday Night
Low: 32 °F
Slight Chance
Rain then
Rain/Freezing
Rain LikelyTuesday
High: 41 °F
Rain then
Chance RainTuesday Night

Low: 30 °F
Partly Cloudy
Wednesday
High: 49 °F
Mostly Sunny
then Chance
Rain
Detailed Forecast
Today
A 50 percent chance of snow, mainly between 10am and 5pm. Cloudy, with a steady temperature around 30. North wind 5 to 10 mph becoming east northeast in the afternoon. Winds could gust as high as 20 mph.
Tonight
A 20 percent chance of snow before 8pm. Mostly cloudy, with a low around 19. Northeast wind around 10 mph, with gusts as high as 15 mph.
Sunday
Partly sunny, with a high near 31. North northeast wind 5 to 10 mph.
Sunday Night
Partly cloudy, with a low around 18. East wind around 5 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 40. Light east southeast wind becoming south southeast 5 to 10 mph in the morning. Winds could gust as high as 15 mph.
Monday Night
A slight chance of rain before midnight, then rain likely, possibly mixed with freezing rain between midnight and 3am, then rain likely after 3am. Mostly cloudy, with a low around 32. Chance of precipitation is 60%.
Tuesday
Rain, mainly before noon. High near 41. Chance of precipitation is 80%.
Tuesday Night
Partly cloudy, with a low around 30.
Wednesday
A chance of rain after noon. Mostly sunny, with a high near 49.
Wednesday Night
Rain likely, mainly after midnight. Mostly cloudy, with a low around 38.
Thursday
A chance of rain. Mostly cloudy, with a high near 56.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 41.
Friday
A chance of rain. Cloudy, with a high near 60.
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
4:26 am CST Feb 28, 2026
4am CST Feb 28, 2026-6pm CST Mar 6, 2026



