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.

Fair

50°F

10°C

Humidity 33%
Wind Speed NW 17 G 30 mph
Barometer 29.73 in (1006.4 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 15 Nov 10:51 pm CST
Extended Forecast for

Round Lake ILSimilar City Names

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 33. Northwest wind around 15 mph, with gusts as high as 25 mph.

    Low: 33 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 47. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 47 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 26. West northwest wind 5 to 10 mph becoming light after midnight.

    Low: 26 °F

    Mostly Clear

  • Monday

    Monday: Increasing clouds, with a high near 47. Calm wind becoming west around 5 mph in the afternoon.

    High: 47 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: Rain likely, mainly after midnight. Cloudy, with a low around 36. Southeast wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%.

    Low: 36 °F

    Rain Likely

  • Tuesday

    Tuesday: Rain likely, mainly before noon. Cloudy, with a high near 43. Chance of precipitation is 60%.

    High: 43 °F

    Rain Likely

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 36.

    Low: 36 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 46.

    High: 46 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming clear, with a low around 33. Northwest wind around 15 mph, with gusts as high as 25 mph.
Sunday
Sunny, with a high near 47. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 26. West northwest wind 5 to 10 mph becoming light after midnight.
Monday
Increasing clouds, with a high near 47. Calm wind becoming west around 5 mph in the afternoon.
Monday Night
Rain likely, mainly after midnight. Cloudy, with a low around 36. Southeast wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%.
Tuesday
Rain likely, mainly before noon. Cloudy, with a high near 43. Chance of precipitation is 60%.
Tuesday Night
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 36.
Wednesday
Mostly cloudy, with a high near 46.
Wednesday Night
Mostly cloudy, with a low around 38.
Thursday
Rain likely, mainly after noon. Mostly cloudy, with a high near 52.
Thursday Night
Rain likely. Mostly cloudy, with a low around 43.
Friday
A chance of rain. Mostly cloudy, with a high near 52.
Friday Night
A chance of rain. Mostly cloudy, with a low around 37.
Saturday
Partly sunny, with a high near 48.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Round Lake ILSimilar City Names
 42.35°N 88.11°W
Last Update:
10:06 pm CST Nov 15, 2025
Forecast Valid:
11pm CST Nov 15, 2025-6pm CST Nov 22, 2025
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation