Hazardous Weather Conditions
Current conditions at
Chicago/Waukegan Regional Airport (KUGN)
Lat: 42.43°NLon: 87.86°WElev: 709ft.
Overcast
24°F
-4°C
| Humidity | 77% |
| Wind Speed | SW 18 mph |
| Barometer | 29.81 in (1011.0 mb) |
| Dewpoint | 18°F (-8°C) |
| Visibility | 10.00 mi |
| Wind Chill | 10°F (-12°C) |
| Last update | 9 Dec 4:51 am CST |
Extended Forecast for
McHenry IL
Today
High: 33 °F
Cloudy then
Slight Chance
Wintry MixTonight
Low: 31 °F⇑
Breezy.
Wintry Mix
then
Rain/Snow
LikelyWednesday
High: 32 °F⇓
Breezy. Snow
Showers then
Slight Chance
Snow ShowersWednesday Night
Low: 11 °F
Slight Chance
Snow then
Mostly CloudyThursday
High: 21 °F
Mostly Sunny
then Slight
Chance SnowThursday Night
Low: 9 °F
Chance Snow
Friday
High: 24 °F
Chance Snow
Friday Night
Low: 0 °F
Mostly Cloudy
Saturday
High: 8 °F
Chance Snow
Detailed Forecast
Today
A slight chance of rain, snow, and freezing rain after 5pm. Cloudy, with a high near 33. West southwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Tonight
Rain, snow and freezing rain, possibly mixed with sleet before 4am, then a chance of rain and snow showers between 4am and 5am, then snow showers likely after 5am. Temperature rising to around 37 by midnight. Breezy, with a south wind 15 to 25 mph becoming west after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 100%. Little or no ice accumulation expected. Little or no snow and sleet accumulation expected.
Wednesday
Snow showers, mainly before 9am. Temperature falling to around 26 by 5pm. Breezy, with a north northwest wind 15 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Wednesday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 11. West northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
A 20 percent chance of snow after noon. Partly sunny, with a high near 21. West wind around 5 mph, with gusts as high as 10 mph.
Thursday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 9.
Friday
A 40 percent chance of snow. Mostly cloudy, with a high near 24.
Friday Night
Mostly cloudy, with a low around 0.
Saturday
A chance of snow. Mostly cloudy and cold, with a high near 8.
Saturday Night
A chance of snow before midnight. Partly cloudy, with a low around -5.
Sunday
Mostly sunny and cold, with a high near 9.
Sunday Night
Mostly cloudy, with a low around -2.
Monday
A chance of snow. Mostly cloudy, with a high near 20.
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
2:51 am CST Dec 9, 2025
4am CST Dec 9, 2025-6pm CST Dec 15, 2025
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