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

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Partly Cloudy

9°F

-13°C

Humidity 88%
Wind Speed W 6 mph
Barometer 30.34 in (1029.6 mb)
Dewpoint 6°F (-14°C)
Visibility 10.00 mi
Wind Chill-1°F (-18°C)
Last update 1 Feb 2:51 am CST
Extended Forecast for

Bull Valley IL

  • Overnight

    Overnight: Mostly clear, with a low around 7. Wind chill values as low as zero. West southwest wind around 5 mph.

    Low: 7 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 26. Wind chill values as low as -1. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 26 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Snow likely, mainly between 9pm and 3am. Cloudy, with a low around 18. South southwest wind 5 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 18 °F

    Snow Likely

  • Monday

    Monday: Mostly cloudy, with a high near 26. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 26 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 12. West northwest wind around 5 mph.

    Low: 12 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 24.

    High: 24 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 7.

    Low: 7 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 24.

    High: 24 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 10.

    Low: 10 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 7. Wind chill values as low as zero. West southwest wind around 5 mph.
Sunday
Mostly sunny, with a high near 26. Wind chill values as low as -1. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday Night
Snow likely, mainly between 9pm and 3am. Cloudy, with a low around 18. South southwest wind 5 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Monday
Mostly cloudy, with a high near 26. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Monday Night
Mostly cloudy, with a low around 12. West northwest wind around 5 mph.
Tuesday
Mostly sunny, with a high near 24.
Tuesday Night
Partly cloudy, with a low around 7.
Wednesday
Sunny, with a high near 24.
Wednesday Night
Partly cloudy, with a low around 10.
Thursday
Partly sunny, with a high near 33.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 26.
Friday
A chance of snow. Mostly cloudy, with a high near 33.
Friday Night
Partly cloudy, with a low around 6.
Saturday
Mostly sunny, with a high near 18.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Bull Valley IL
 42.32°N 88.35°W
Last Update:
3:11 am CST Feb 1, 2026
Forecast Valid:
3am CST Feb 1, 2026-6pm CST Feb 7, 2026
 
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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