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

20°F

-7°C

Humidity 78%
Wind Speed S 9 mph
Barometer 30.01 in (1017.9 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill10°F (-12°C)
Last update 24 Feb 5:51 am CST
Extended Forecast for

Old Mill Creek IL

  • Today

    Today: A chance of rain and snow showers after 3pm. Mostly cloudy, with a high near 39. Breezy, with a south southwest wind 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 40%.

    High: 39 °F

    Breezy.
    Partly Sunny
    then Chance
    Rain/Snow

  • Tonight

    Tonight: A 30 percent chance of light rain with a slight chance of showers before 7pm. Mostly cloudy, with a low around 21. West northwest wind around 15 mph, with gusts as high as 25 mph.

    Low: 21 °F

    Chance Light
    Rain then
    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 31. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 31 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow. Mostly cloudy, with a low around 19. West northwest wind around 5 mph becoming north northeast after midnight. Winds could gust as high as 10 mph.

    Low: 19 °F

    Slight Chance
    Snow

  • Thursday

    Thursday: Mostly sunny, with a high near 40. North northeast wind 5 to 10 mph becoming southwest in the afternoon.

    High: 40 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 27.

    Low: 27 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of snow after noon. Partly sunny, with a high near 40.

    High: 40 °F

    Partly Sunny
    then Chance
    Snow

Detailed Forecast

Today
A chance of rain and snow showers after 3pm. Mostly cloudy, with a high near 39. Breezy, with a south southwest wind 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 40%.
Tonight
A 30 percent chance of light rain with a slight chance of showers before 7pm. Mostly cloudy, with a low around 21. West northwest wind around 15 mph, with gusts as high as 25 mph.
Wednesday
Sunny, with a high near 31. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 19. West northwest wind around 5 mph becoming north northeast after midnight. Winds could gust as high as 10 mph.
Thursday
Mostly sunny, with a high near 40. North northeast wind 5 to 10 mph becoming southwest in the afternoon.
Thursday Night
Mostly clear, with a low around 27.
Friday
Sunny, with a high near 55.
Friday Night
Partly cloudy, with a low around 30.
Saturday
A chance of snow after noon. Partly sunny, with a high near 40.
Saturday Night
Mostly cloudy, with a low around 17.
Sunday
Mostly sunny, with a high near 30.
Sunday Night
A chance of snow. Partly cloudy, with a low around 20.
Monday
A chance of snow. Partly sunny, with a high near 34.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Old Mill Creek IL
 42.42°N 88.02°W
Last Update:
3:11 am CST Feb 24, 2026
Forecast Valid:
6am CST Feb 24, 2026-6pm CST Mar 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation