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.

A Few Clouds

71°F

22°C

Humidity 63%
Wind Speed S 15 G 24 mph
Barometer 29.74 in (1006.7 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 17 Apr 2:51 pm CDT
Extended Forecast for

Grandwood Park IL

Flood Watch until April 18, 05:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch until April 18, 05:00am

    NOW until 5:00am Sat

    Flood Watch

  • This Afternoon

    High: 78 °F

    Chance
    T-storms and
    Breezy

  • Tonight

    Tonight: Showers and thunderstorms before 1am, then showers likely. Low around 42. South wind around 15 mph becoming west northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    Low: 42 °F

    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: A 10 percent chance of showers before 7am. Cloudy through mid morning, then gradual clearing, with a high near 51. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 51 °F

    Breezy.
    Slight Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Areas of frost after 4am. Otherwise, mostly clear, with a low around 32. West northwest wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 32 °F

    Partly Cloudy
    then Areas
    Frost

  • Sunday

    Sunday: Areas of frost before 7am. Otherwise, mostly sunny, with a high near 49. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 49 °F

    Areas Frost
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: Widespread frost, mainly after 1am. Otherwise, mostly clear, with a low around 31.

    Low: 31 °F

    Frost

  • Monday

    Monday: Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 51.

    High: 51 °F

    Frost then
    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 78. Breezy, with a south wind around 20 mph, with gusts as high as 30 mph.
Tonight
Showers and thunderstorms before 1am, then showers likely. Low around 42. South wind around 15 mph becoming west northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Saturday
A 10 percent chance of showers before 7am. Cloudy through mid morning, then gradual clearing, with a high near 51. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Saturday Night
Areas of frost after 4am. Otherwise, mostly clear, with a low around 32. West northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Sunday
Areas of frost before 7am. Otherwise, mostly sunny, with a high near 49. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Widespread frost, mainly after 1am. Otherwise, mostly clear, with a low around 31.
Monday
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 51.
Monday Night
Mostly cloudy, with a low around 42.
Tuesday
Mostly sunny, with a high near 70.
Tuesday Night
Partly cloudy, with a low around 45.
Wednesday
Sunny, with a high near 63.
Wednesday Night
Partly cloudy, with a low around 49.
Thursday
Mostly sunny, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grandwood Park IL
 42.39°N 87.99°W
Last Update:
2:51 pm CDT Apr 17, 2026
Forecast Valid:
3pm CDT Apr 17, 2026-6pm CDT Apr 23, 2026
 
Forecast Discussion
 
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Additional Resources

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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