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

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Overcast

58°F

14°C

Humidity 87%
Wind Speed SE 7 mph
Barometer 30.27 in (1024.9 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 1 Nov 3:51 pm CST
Extended Forecast for

Round Lake Heights IL

  • This Afternoon

    This Afternoon: A 20 percent chance of showers. Cloudy, with a steady temperature around 61. Southeast wind around 5 mph.

    High: 61 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A chance of sprinkles before 9pm, then a slight chance of showers between 9pm and 3am, then patchy drizzle after 3am. Mostly cloudy, with a low around 54. South southeast wind 5 to 10 mph. Chance of precipitation is 20%.

    Low: 54 °F

    Patchy
    Drizzle

  • Monday

    Monday: Patchy drizzle before 9am, then a chance of showers after 9am. Cloudy, with a high near 62. South southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    High: 62 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A 50 percent chance of showers, mainly between 9pm and 3am. Cloudy, with a low around 60. South wind around 15 mph, with gusts as high as 30 mph.

    Low: 60 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers before noon, then showers likely and possibly a thunderstorm between noon and 3pm, then showers likely after 3pm. Cloudy, with a high near 71. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.

    High: 71 °F

    Breezy.
    Slight Chance
    Showers then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers. Low around 56. Chance of precipitation is 90%.

    Low: 56 °F

    Showers

  • Wednesday

    Wednesday: Showers likely, mainly before noon. Mostly cloudy, with a high near 65. Chance of precipitation is 70%.

    High: 65 °F

    Showers
    Likely then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 61.

    High: 61 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
A 20 percent chance of showers. Cloudy, with a steady temperature around 61. Southeast wind around 5 mph.
Tonight
A chance of sprinkles before 9pm, then a slight chance of showers between 9pm and 3am, then patchy drizzle after 3am. Mostly cloudy, with a low around 54. South southeast wind 5 to 10 mph. Chance of precipitation is 20%.
Monday
Patchy drizzle before 9am, then a chance of showers after 9am. Cloudy, with a high near 62. South southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Monday Night
A 50 percent chance of showers, mainly between 9pm and 3am. Cloudy, with a low around 60. South wind around 15 mph, with gusts as high as 30 mph.
Tuesday
A slight chance of showers before noon, then showers likely and possibly a thunderstorm between noon and 3pm, then showers likely after 3pm. Cloudy, with a high near 71. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
Tuesday Night
Showers. Low around 56. Chance of precipitation is 90%.
Wednesday
Showers likely, mainly before noon. Mostly cloudy, with a high near 65. Chance of precipitation is 70%.
Wednesday Night
Mostly cloudy, with a low around 47.
Thursday
Mostly cloudy, with a high near 61.
Thursday Night
Mostly cloudy, with a low around 43.
Friday
Mostly cloudy, with a high near 56.
Friday Night
Mostly cloudy, with a low around 39.
Saturday
Partly sunny, with a high near 57.
Saturday Night
Mostly cloudy, with a low around 39.
Sunday
Partly sunny, with a high near 58.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Round Lake Heights IL
 42.38°N 88.11°W
Last Update:
4:01 pm CST Nov 1, 2026
Forecast Valid:
4pm CST Nov 1, 2026-6pm CST Nov 8, 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