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.

Fair

45°F

7°C

Humidity 71%
Wind Speed NE 10 mph
Barometer 30.31 in (1026.8 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 21 May 4:51 am CDT
Extended Forecast for

Mc Cullom Lake IL

  • Today

    Today: A slight chance of sprinkles between 10am and 1pm. Partly sunny, with a high near 59. East northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 59 °F

    Slight Chance
    Sprinkles

  • Tonight

    Tonight: Mostly cloudy, with a low around 45. East northeast wind 10 to 15 mph.

    Low: 45 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 64. East wind around 15 mph, with gusts as high as 25 mph.

    High: 64 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: Showers likely, mainly after 1am. Cloudy, with a low around 50. East northeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    Low: 50 °F

    Showers
    Likely

  • Saturday

    Saturday: A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 70. North northeast wind around 10 mph becoming northwest in the afternoon.

    High: 70 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers after 1pm. Partly sunny, with a high near 77.

    High: 77 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Memorial Day

    Memorial Day: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

Detailed Forecast

Today
A slight chance of sprinkles between 10am and 1pm. Partly sunny, with a high near 59. East northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
Mostly cloudy, with a low around 45. East northeast wind 10 to 15 mph.
Friday
A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 64. East wind around 15 mph, with gusts as high as 25 mph.
Friday Night
Showers likely, mainly after 1am. Cloudy, with a low around 50. East northeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Saturday
A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 70. North northeast wind around 10 mph becoming northwest in the afternoon.
Saturday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 52.
Sunday
A 20 percent chance of showers after 1pm. Partly sunny, with a high near 77.
Sunday Night
Partly cloudy, with a low around 54.
Memorial Day
Mostly sunny, with a high near 80.
Monday Night
Partly cloudy, with a low around 56.
Tuesday
Mostly sunny, with a high near 81.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 59.
Wednesday
A chance of showers. Partly sunny, with a high near 82.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mc Cullom Lake IL
 42.36°N 88.29°W
Last Update:
4:11 am CDT May 21, 2026
Forecast Valid:
5am CDT May 21, 2026-6pm CDT May 27, 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