National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Widespread Rain from Texas to the Central Appalachians; Heavy to Excessive Rainfall in Southern California and the Southwest

Scattered thunderstorms and widespread showers are expected from the Texas coast to the central Appalachians today. Heavy to excessive rainfall will continue in southern California into the Desert Southwest through Saturday. Heavy rain will pose a risk of flash flooding, especially across burn scar and urbanized regions. Read More >

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fair

39°F

4°C

Humidity 67%
Wind Speed NW 5 mph
Barometer 29.99 in (1016.3 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 21 Nov 8:51 pm CST
Extended Forecast for

Round Lake Beach IL

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 29. North wind around 5 mph becoming calm after midnight.

    Low: 29 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Increasing clouds, with a high near 49. Light and variable wind becoming south southwest 5 to 10 mph in the morning. Winds could gust as high as 15 mph.

    High: 49 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 34. Southwest wind 5 to 10 mph becoming west northwest after midnight. Winds could gust as high as 15 mph.

    Low: 34 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 53. West northwest wind around 5 mph, with gusts as high as 10 mph.

    High: 53 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 34. South wind around 5 mph.

    Low: 34 °F

    Mostly Clear

  • Monday

    Monday: A 30 percent chance of rain after noon. Mostly cloudy, with a high near 53.

    High: 53 °F

    Partly Sunny
    then Chance
    Rain

  • Monday Night

    Monday Night: Rain. Low around 45. Chance of precipitation is 90%.

    Low: 45 °F

    Rain

  • Tuesday

    Tuesday: A chance of rain. Mostly cloudy, with a high near 55.

    High: 55 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 29. North wind around 5 mph becoming calm after midnight.
Saturday
Increasing clouds, with a high near 49. Light and variable wind becoming south southwest 5 to 10 mph in the morning. Winds could gust as high as 15 mph.
Saturday Night
Mostly clear, with a low around 34. Southwest wind 5 to 10 mph becoming west northwest after midnight. Winds could gust as high as 15 mph.
Sunday
Sunny, with a high near 53. West northwest wind around 5 mph, with gusts as high as 10 mph.
Sunday Night
Mostly clear, with a low around 34. South wind around 5 mph.
Monday
A 30 percent chance of rain after noon. Mostly cloudy, with a high near 53.
Monday Night
Rain. Low around 45. Chance of precipitation is 90%.
Tuesday
A chance of rain. Mostly cloudy, with a high near 55.
Tuesday Night
Mostly cloudy, with a low around 31.
Wednesday
Mostly sunny, with a high near 41. Breezy.
Wednesday Night
Partly cloudy, with a low around 24.
Thanksgiving Day
Mostly sunny, with a high near 35.
Thursday Night
Partly cloudy, with a low around 20.
Friday
Mostly sunny, with a high near 34.
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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:
7:31 pm CST Nov 21, 2025
Forecast Valid:
9pm CST Nov 21, 2025-6pm CST Nov 28, 2025
 
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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