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September 1-4, 2026: Abnormally Hot and Humid Start to September

Current conditions at

Greater Kankakee Airport (KIKK)

Lat: 41.07°NLon: 87.85°WElev: 617ft.

Fair

81°F

27°C

Humidity	42%
Wind Speed	E 7 mph
Barometer	30.13 in
Dewpoint	55°F (13°C)
Visibility	10.00 mi
Heat Index	81°F (27°C)
Last update	7 Sep 5:35 pm CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Grant Park IL

Tonight
Low: 60 °F
Partly Cloudy
Tuesday
High: 86 °F
Mostly Sunny
Tuesday Night
Low: 70 °F
Partly Cloudy
Wednesday
High: 85 °F
Showers
Likely
Wednesday Night
Low: 63 °F
Slight Chance
T-storms
Thursday
High: 78 °F
Mostly Sunny
Thursday Night
Low: 55 °F
Mostly Clear
Friday
High: 83 °F
Sunny
Friday Night
Low: 61 °F
Partly Cloudy

Detailed Forecast

Tonight

Partly cloudy, with a low around 60. East southeast wind 5 to 10 mph.

Tuesday

Mostly sunny, with a high near 86. East southeast wind 5 to 10 mph becoming south southwest in the morning.

Tuesday Night

Partly cloudy, with a low around 70. South wind 5 to 10 mph.

Wednesday

A chance of showers and thunderstorms before 10am, then showers likely and possibly a thunderstorm between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 85. West southwest wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%.

Wednesday Night

A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 63. West wind 5 to 10 mph.

Thursday

Mostly sunny, with a high near 78.

Thursday Night

Mostly clear, with a low around 55.

Friday

Sunny, with a high near 83.

Friday Night

Partly cloudy, with a low around 61.

Saturday

Mostly sunny, with a high near 86.