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

Heavy to Excessive Rainfall This Week from the Southwest into Central U.S.; Severe Weather in the Southern Plains

Pacific tropical moisture wrapping into a storm will continue a multi-day heavy rainfall event this week that will impact multiple areas in the Plains and Intermountain West. Isolated severe thunderstorm wind gusts and possibly a tornado or two could occur tonight from southern and eastern New Mexico into west Texas. Read More >

Current conditions at

Greater Kankakee Airport (KIKK)

Lat: 41.07°NLon: 87.85°WElev: 617ft.

Fair

64°F

18°C

Humidity 65%
Wind Speed S 6 mph
Barometer 29.95 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 30 Sep 1:55 am CDT
Extended Forecast for

Onarga IL

  • Overnight

    Overnight: A 10 percent chance of showers after 5am. Mostly cloudy, with a low around 62. South wind around 5 mph, with gusts as high as 15 mph.

    Low: 62 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A 50 percent chance of showers, mainly after 7am. Cloudy, with a high near 74. South wind around 5 mph, with gusts as high as 15 mph.

    High: 74 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers before 9pm, then a slight chance of showers after 2am. Mostly cloudy, with a low around 67. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 20%.

    Low: 67 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: Showers likely, then showers and possibly a thunderstorm after 4pm. High near 79. Southwest wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 80%.

    High: 79 °F

    Chance
    Showers then
    Showers

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Low around 59. West wind around 5 mph becoming north after midnight. Winds could gust as high as 10 mph. Chance of precipitation is 100%.

    Low: 59 °F

    Showers

  • Friday

    Friday: A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 69.

    High: 69 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 10 percent chance of showers after 5am. Mostly cloudy, with a low around 62. South wind around 5 mph, with gusts as high as 15 mph.
Wednesday
A 50 percent chance of showers, mainly after 7am. Cloudy, with a high near 74. South wind around 5 mph, with gusts as high as 15 mph.
Wednesday Night
A slight chance of showers before 9pm, then a slight chance of showers after 2am. Mostly cloudy, with a low around 67. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 20%.
Thursday
Showers likely, then showers and possibly a thunderstorm after 4pm. High near 79. Southwest wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 80%.
Thursday Night
Showers and possibly a thunderstorm. Low around 59. West wind around 5 mph becoming north after midnight. Winds could gust as high as 10 mph. Chance of precipitation is 100%.
Friday
A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 69.
Friday Night
Mostly clear, with a low around 45.
Saturday
Sunny, with a high near 70.
Saturday Night
Partly cloudy, with a low around 46.
Sunday
Sunny, with a high near 71.
Sunday Night
Mostly clear, with a low around 43.
Monday
Sunny, with a high near 65.
Monday Night
Mostly clear, with a low around 40.
Tuesday
Sunny, with a high near 66.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Onarga IL
 40.71°N 88.02°W
Last Update:
1:21 am CDT Sep 30, 2026
Forecast Valid:
2am CDT Sep 30, 2026-6pm CDT Oct 6, 2026
 
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