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.

Overcast

81°F

27°C

Humidity 77%
Wind Speed NW 6 G 21 mph
Barometer 29.96 in (1013.0 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 3 Sep 9:51 am CDT
Extended Forecast for

Hainesville IL

  • Today

    Today: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86. Heat index values as high as 100. West southwest wind 5 to 15 mph becoming northeast in the morning.

    High: 86 °F

    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 70. East southeast wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 70 °F

    T-storms
    Likely

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms, mainly before 10am. Mostly cloudy, then gradual clearing during the afternoon, with a high near 86. Heat index values as high as 95. East southeast wind around 10 mph becoming southwest in the afternoon.

    High: 86 °F

    Chance
    T-storms then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Northeast wind around 5 mph, with gusts as high as 10 mph.

    Low: 71 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 78. Northeast wind 5 to 10 mph.

    High: 78 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 67.

    Low: 67 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Labor Day

    Labor Day: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

Detailed Forecast

Today
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86. Heat index values as high as 100. West southwest wind 5 to 15 mph becoming northeast in the morning.
Tonight
Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 70. East southeast wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Friday
A 50 percent chance of showers and thunderstorms, mainly before 10am. Mostly cloudy, then gradual clearing during the afternoon, with a high near 86. Heat index values as high as 95. East southeast wind around 10 mph becoming southwest in the afternoon.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Northeast wind around 5 mph, with gusts as high as 10 mph.
Saturday
A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 78. Northeast wind 5 to 10 mph.
Saturday Night
Partly cloudy, with a low around 67.
Sunday
Mostly sunny, with a high near 76.
Sunday Night
Partly cloudy, with a low around 63.
Labor Day
Mostly sunny, with a high near 81.
Monday Night
Partly cloudy, with a low around 64.
Tuesday
Mostly sunny, with a high near 83.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 69.
Wednesday
A chance of showers. Partly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hainesville IL
 42.35°N 88.05°W
Last Update:
10:21 am CDT Sep 3, 2026
Forecast Valid:
10am CDT Sep 3, 2026-6pm CDT Sep 9, 2026
 
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Additional Resources

Radar & Satellite Image

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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