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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

Greater Kankakee Airport (KIKK)

Lat: 41.07°NLon: 87.85°WElev: 617ft.

Fair

66°F

19°C

Humidity 90%
Wind Speed Calm
Barometer 30.07 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 27 Aug 10:55 pm CDT
Extended Forecast for

Bourbonnais IL

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, mostly clear, with a low around 60. Calm wind.

    Low: 60 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog before 8am. Otherwise, sunny, with a high near 83. Calm wind becoming south southeast around 5 mph.

    High: 83 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 59. South southeast wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 83. Calm wind becoming south around 5 mph in the morning. Winds could gust as high as 10 mph.

    High: 83 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 66. South southeast wind around 5 mph, with gusts as high as 15 mph.

    Low: 66 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 71.

    Low: 71 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 73.

    Low: 73 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog after 2am. Otherwise, mostly clear, with a low around 60. Calm wind.
Friday
Patchy fog before 8am. Otherwise, sunny, with a high near 83. Calm wind becoming south southeast around 5 mph.
Friday Night
Partly cloudy, with a low around 59. South southeast wind around 5 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 83. Calm wind becoming south around 5 mph in the morning. Winds could gust as high as 10 mph.
Saturday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 66. South southeast wind around 5 mph, with gusts as high as 15 mph.
Sunday
Mostly sunny, with a high near 88.
Sunday Night
Partly cloudy, with a low around 71.
Monday
Mostly sunny, with a high near 90.
Monday Night
Partly cloudy, with a low around 73.
Tuesday
Mostly sunny, with a high near 91.
Tuesday Night
Partly cloudy, with a low around 72.
Wednesday
Mostly sunny, with a high near 90.
Wednesday Night
Partly cloudy, with a low around 70.
Thursday
Mostly sunny, with a high near 89.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Bourbonnais IL
 41.16°N 87.87°W
Last Update:
9:56 pm CDT Aug 27, 2026
Forecast Valid:
11pm CDT Aug 27, 2026-6pm CDT Sep 3, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation