National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Light Snow

18°F

-8°C

Humidity 68%
Wind Speed NE 13 mph
Barometer 30.36 in (1030.6 mb)
Dewpoint 9°F (-13°C)
Visibility 6.00 mi
Wind Chill5°F (-15°C)
Last update 30 Jan 1:51 pm CST
Extended Forecast for

McHenry IL

  • This Afternoon

    This Afternoon: Snow showers, mainly before 5pm. High near 18. Wind chill values as low as 1. North northeast wind 10 to 15 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 1 to 2 inches possible.

    High: 18 °F

    Snow Showers

  • Tonight

    Tonight: Scattered snow showers, mainly before 7pm. Mostly cloudy, with a low around 6. Wind chill values as low as -9. North northwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    Low: 6 °F

    Scattered
    Snow Showers
    then Mostly
    Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 24. Wind chill values as low as -8. North northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 24 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 6. North northwest wind around 5 mph becoming calm in the evening.

    Low: 6 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of snow after noon. Mostly sunny, with a high near 26. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 26 °F

    Mostly Sunny
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 16.

    Low: 16 °F

    Chance Snow

  • Monday

    Monday: Mostly cloudy, with a high near 28.

    High: 28 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 16.

    Low: 16 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of snow after noon. Mostly cloudy, with a high near 28.

    High: 28 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

This Afternoon
Snow showers, mainly before 5pm. High near 18. Wind chill values as low as 1. North northeast wind 10 to 15 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 1 to 2 inches possible.
Tonight
Scattered snow showers, mainly before 7pm. Mostly cloudy, with a low around 6. Wind chill values as low as -9. North northwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 24. Wind chill values as low as -8. North northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 6. North northwest wind around 5 mph becoming calm in the evening.
Sunday
A 20 percent chance of snow after noon. Mostly sunny, with a high near 26. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 16.
Monday
Mostly cloudy, with a high near 28.
Monday Night
Mostly cloudy, with a low around 16.
Tuesday
A chance of snow after noon. Mostly cloudy, with a high near 28.
Tuesday Night
Mostly cloudy, with a low around 16.
Wednesday
Partly sunny, with a high near 26.
Wednesday Night
Mostly cloudy, with a low around 11.
Thursday
Partly sunny, with a high near 29.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
McHenry IL
 42.34°N 88.26°W
Last Update:
1:56 pm CST Jan 30, 2026
Forecast Valid:
2pm CST Jan 30, 2026-6pm CST Feb 5, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation