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.

Mostly Cloudy

76°F

24°C

Humidity 69%
Wind Speed NE 6 mph
Barometer 30.02 in (1015.7 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 17 Aug 2:51 pm CDT
Extended Forecast for

Hainesville IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 79. North northwest wind around 5 mph, with gusts as high as 10 mph.

    High: 79 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 60. Calm wind becoming west southwest around 5 mph after midnight.

    Low: 60 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 80. West southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 80 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 1am, then a slight chance of showers after 1am. Mostly cloudy, with a low around 62. West northwest wind 5 to 10 mph. Chance of precipitation is 60%.

    Low: 62 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Mostly sunny, with a high near 77. Calm wind becoming north around 5 mph in the afternoon.

    High: 77 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Thursday Night

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

    Low: 59 °F

    Mostly Clear

  • Friday

    Friday: A chance of showers after 1pm. Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny
    then Chance
    Showers

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 79. North northwest wind around 5 mph, with gusts as high as 10 mph.
Tonight
Mostly clear, with a low around 60. Calm wind becoming west southwest around 5 mph after midnight.
Tuesday
A 50 percent chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 80. West southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
A chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 1am, then a slight chance of showers after 1am. Mostly cloudy, with a low around 62. West northwest wind 5 to 10 mph. Chance of precipitation is 60%.
Wednesday
Mostly sunny, with a high near 77. Calm wind becoming north around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 59.
Thursday
Sunny, with a high near 78.
Thursday Night
Mostly clear, with a low around 59.
Friday
A chance of showers after 1pm. Mostly sunny, with a high near 79.
Friday Night
A chance of showers. Partly cloudy, with a low around 61.
Saturday
A chance of showers. Mostly sunny, with a high near 76.
Saturday Night
Mostly clear, with a low around 57.
Sunday
Mostly sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hainesville IL
 42.35°N 88.08°W
Last Update:
2:46 pm CDT Aug 17, 2026
Forecast Valid:
3pm CDT Aug 17, 2026-6pm CDT Aug 23, 2026
 
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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