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

61°F

16°C

Humidity 52%
Wind Speed NE 12 G 18 mph
Barometer 30.07 in (1018.3 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 22 May 2:51 pm CDT
Extended Forecast for

Round Lake Beach IL

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 66. East northeast wind around 15 mph, with gusts as high as 25 mph.

    High: 66 °F

    Partly Sunny

  • Tonight

    Tonight: A 20 percent chance of showers after 4am. Cloudy, with a low around 53. East northeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 53 °F

    Cloudy then
    Slight Chance
    Showers

  • Saturday

    Saturday: A 20 percent chance of showers before 9am. Mostly cloudy, with a high near 67. Northeast wind 5 to 10 mph.

    High: 67 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 52. East wind 5 to 10 mph becoming light and variable after midnight.

    Low: 52 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: A 30 percent chance of showers before 1pm. Partly sunny, with a high near 74. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 74 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Memorial Day

    Memorial Day: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 66. East northeast wind around 15 mph, with gusts as high as 25 mph.
Tonight
A 20 percent chance of showers after 4am. Cloudy, with a low around 53. East northeast wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday
A 20 percent chance of showers before 9am. Mostly cloudy, with a high near 67. Northeast wind 5 to 10 mph.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 52. East wind 5 to 10 mph becoming light and variable after midnight.
Sunday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 74. Calm wind becoming west southwest around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 56.
Memorial Day
Sunny, with a high near 82.
Monday Night
Mostly clear, with a low around 59.
Tuesday
Mostly sunny, with a high near 85.
Tuesday Night
Partly cloudy, with a low around 60.
Wednesday
Mostly sunny, with a high near 80.
Wednesday Night
Partly cloudy, with a low around 58.
Thursday
Mostly sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Round Lake Beach IL
 42.37°N 88.08°W
Last Update:
2:46 pm CDT May 22, 2026
Forecast Valid:
3pm CDT May 22, 2026-6pm CDT May 28, 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