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

Tropical Moisture Brings Slight Risk of Excessive Rainfall to the Southwest; Strong to Locally Severe Storms on the Plains

Heavy rain and flash flooding are possible across portions of the Southwest through Friday, where Flood Watches are in effect. Strong to locally severe thunderstorms are possible today across portions of the Plains. A tropical wave is causing heavy rainfall in Puerto Rico and the Virgin Islands, which may cause urban and small stream flooding and landslides today. Read More >

Current conditions at

Greater Kankakee Airport (KIKK)

Lat: 41.07°NLon: 87.85°WElev: 617ft.

Fair

88°F

31°C

Humidity 29%
Wind Speed NE 5 mph
Barometer 30.02 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 18 Sep 5:16 pm CDT
Extended Forecast for

Gilman IL

  • Tonight

    Tonight: Mostly clear, with a low around 58. East wind around 5 mph.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 89. East southeast wind around 5 mph becoming south southwest in the afternoon. Winds could gust as high as 10 mph.

    High: 89 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A slight chance of showers, then a chance of showers and thunderstorms after 10pm. Mostly cloudy, with a low around 63. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.

    Low: 63 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 84. Southeast wind around 5 mph. Chance of precipitation is 20%.

    High: 84 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 1am, then a chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 62. South southeast wind around 5 mph. Chance of precipitation is 30%.

    Low: 62 °F

    Chance
    Showers

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 81.

    High: 81 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.

    Low: 61 °F

    Showers
    Likely

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 80.

    High: 80 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers. Mostly cloudy, with a low around 61.

    Low: 61 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 58. East wind around 5 mph.
Friday
Mostly sunny, with a high near 89. East southeast wind around 5 mph becoming south southwest in the afternoon. Winds could gust as high as 10 mph.
Friday Night
A slight chance of showers, then a chance of showers and thunderstorms after 10pm. Mostly cloudy, with a low around 63. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.
Saturday
A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 84. Southeast wind around 5 mph. Chance of precipitation is 20%.
Saturday Night
A chance of showers and thunderstorms before 1am, then a chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 62. South southeast wind around 5 mph. Chance of precipitation is 30%.
Sunday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 81.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.
Monday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 80.
Monday Night
A chance of showers. Mostly cloudy, with a low around 61.
Tuesday
A chance of showers. Mostly cloudy, with a high near 77.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 60.
Wednesday
Partly sunny, with a high near 76.
Wednesday Night
Mostly cloudy, with a low around 58.
Thursday
A chance of showers. Partly sunny, with a high near 75.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Gilman IL
 40.77°N 87.99°W
Last Update:
4:12 pm CDT Sep 18, 2025
Forecast Valid:
5pm CDT Sep 18, 2025-6pm CDT Sep 25, 2025
 
Forecast Discussion
 
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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