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

74°F

23°C

Humidity 88%
Wind Speed Calm
Barometer 29.89 in (1010.7 mb)
Dewpoint 70°F (21°C)
Visibility 9.00 mi
Last update 16 Jul 1:51 am CDT
Extended Forecast for

3 Miles NNW Old Mill Creek IL

  • Overnight

    Overnight: A 30 percent chance of showers, mainly before 3am. Partly cloudy, with a low around 71. Calm wind becoming south around 5 mph.

    Low: 71 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after 4pm. Partly sunny, with a high near 88. Heat index values as high as 96. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    Partly Sunny
    then T-storms
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 66. Southwest wind around 10 mph becoming west northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    T-storms
    Likely

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 70. Northwest wind 10 to 15 mph becoming north northeast in the afternoon.

    High: 70 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 57. North northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 57 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy
    then Chance
    T-storms

  • Saturday

    Saturday: Showers and thunderstorms likely, mainly before 1pm. Mostly cloudy, with a high near 80.

    High: 80 °F

    T-storms
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 66.

    Low: 66 °F

    Chance
    T-storms

Detailed Forecast

Overnight
A 30 percent chance of showers, mainly before 3am. Partly cloudy, with a low around 71. Calm wind becoming south around 5 mph.
Wednesday
Showers and thunderstorms likely, mainly after 4pm. Partly sunny, with a high near 88. Heat index values as high as 96. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 66. Southwest wind around 10 mph becoming west northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 70. Northwest wind 10 to 15 mph becoming north northeast in the afternoon.
Thursday Night
Partly cloudy, with a low around 57. North northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Friday
Mostly sunny, with a high near 75.
Friday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 62.
Saturday
Showers and thunderstorms likely, mainly before 1pm. Mostly cloudy, with a high near 80.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Sunday
Partly sunny, with a high near 78.
Sunday Night
Partly cloudy, with a low around 64.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 81.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Tuesday
Partly sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Old Mill Creek IL
 42.46°N 88.02°W
Last Update:
1:56 am CDT Jul 16, 2025
Forecast Valid:
2am CDT Jul 16, 2025-6pm CDT Jul 22, 2025
 
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