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Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fair

48°F

9°C

Humidity 63%
Wind Speed NE 12 G 18 mph
Barometer 30.28 in (1025.7 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 20 May 11:51 pm CDT
Extended Forecast for

Round Lake IL

  • Overnight

    Overnight: Partly cloudy, with a low around 42. Northeast wind around 10 mph, with gusts as high as 15 mph.

    Low: 42 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of sprinkles between 10am and 1pm. Partly sunny, with a high near 58. East northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 58 °F

    Chance
    Sprinkles

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 44. Northeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 44 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of showers after 1pm. Mostly cloudy, with a high near 61. East northeast wind around 15 mph, with gusts as high as 25 mph.

    High: 61 °F

    Partly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: Showers. Low around 49. East northeast wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

    Low: 49 °F

    Showers

  • Saturday

    Saturday: A 20 percent chance of showers before 10am. Mostly cloudy, with a high near 71.

    High: 71 °F

    Slight Chance
    Showers then
    Partly Sunny

  • 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: Partly sunny, with a high near 76.

    High: 76 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 42. Northeast wind around 10 mph, with gusts as high as 15 mph.
Thursday
A chance of sprinkles between 10am and 1pm. Partly sunny, with a high near 58. East northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Mostly cloudy, with a low around 44. Northeast wind around 10 mph, with gusts as high as 20 mph.
Friday
A 30 percent chance of showers after 1pm. Mostly cloudy, with a high near 61. East northeast wind around 15 mph, with gusts as high as 25 mph.
Friday Night
Showers. Low around 49. East northeast wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Saturday
A 20 percent chance of showers before 10am. Mostly cloudy, with a high near 71.
Saturday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 52.
Sunday
Partly sunny, with a high near 76.
Sunday Night
Partly cloudy, with a low around 53.
Memorial Day
Mostly sunny, with a high near 79.
Monday Night
Partly cloudy, with a low around 56.
Tuesday
Partly 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 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Round Lake IL
 42.35°N 88.11°W
Last Update:
9:16 pm CDT May 20, 2026
Forecast Valid:
12am CDT May 21, 2026-6pm CDT May 27, 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