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Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fair

69°F

21°C

Humidity 81%
Wind Speed SW 10 mph
Barometer 29.88 in (1010.7 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 17 May 12:51 am CDT
Extended Forecast for

Old Mill Creek IL

  • Overnight

    Overnight: A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Southwest wind around 5 mph. Chance of precipitation is 30%.

    Low: 60 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers before 1pm, then a slight chance of showers and thunderstorms between 1pm and 2pm. Mostly cloudy, with a high near 79. Breezy, with an east wind 5 to 10 mph becoming southeast 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 50%.

    High: 79 °F

    Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 68. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 68 °F

    Partly Cloudy

  • Monday

    Monday: A chance of showers and thunderstorms before 11am, then showers likely between 11am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 83. Breezy, with a south southwest wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.

    High: 83 °F

    Showers
    Likely and
    Breezy

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 66 °F

    Chance
    T-storms then
    Chance
    Showers and
    Breezy

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then showers likely after 4pm. Mostly cloudy, with a high near 81. Breezy. Chance of precipitation is 60%.

    High: 81 °F

    Showers
    Likely and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 48.

    Low: 48 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 61.

    High: 61 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

Detailed Forecast

Overnight
A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Southwest wind around 5 mph. Chance of precipitation is 30%.
Sunday
A chance of showers before 1pm, then a slight chance of showers and thunderstorms between 1pm and 2pm. Mostly cloudy, with a high near 79. Breezy, with an east wind 5 to 10 mph becoming southeast 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 50%.
Sunday Night
Partly cloudy, with a low around 68. South wind around 15 mph, with gusts as high as 25 mph.
Monday
A chance of showers and thunderstorms before 11am, then showers likely between 11am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 83. Breezy, with a south southwest wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday
A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then showers likely after 4pm. Mostly cloudy, with a high near 81. Breezy. Chance of precipitation is 60%.
Tuesday Night
Mostly cloudy, with a low around 48.
Wednesday
Partly sunny, with a high near 61.
Wednesday Night
Partly cloudy, with a low around 42.
Thursday
Mostly sunny, with a high near 60.
Thursday Night
Partly cloudy, with a low around 46.
Friday
Partly sunny, with a high near 66.
Friday Night
Mostly cloudy, with a low around 50.
Saturday
Partly sunny, with a high near 72.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Old Mill Creek IL
 42.44°N 87.99°W
Last Update:
1:21 am CDT May 17, 2026
Forecast Valid:
1am CDT May 17, 2026-6pm CDT May 23, 2026
 
Forecast Discussion
 
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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