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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Hazardous Weather Conditions

Current conditions at

Greater Kankakee Airport (KIKK)

Lat: 41.07°NLon: 87.85°WElev: 617ft.

Fog/Mist

70°F

21°C

Humidity 95%
Wind Speed N 9 mph
Barometer 29.95 in
Dewpoint 69°F (21°C)
Visibility 4.00 mi
Last update 20 Sep 1:15 pm CDT
Extended Forecast for

Herscher IL

  • This Afternoon

    This Afternoon: Showers and possibly a thunderstorm. Steady temperature around 68. North northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 68 °F

    Showers

  • Tonight

    Tonight: A 50 percent chance of showers, mainly before 4am. Cloudy, with a low around 58. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 58 °F

    Chance
    Showers

  • Monday

    Monday: A 20 percent chance of showers before 1pm. Cloudy, with a high near 64. Northeast wind around 10 mph, with gusts as high as 20 mph.

    High: 64 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 53. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 53 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers. Partly sunny, with a high near 66. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 66 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm. Steady temperature around 68. North northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
A 50 percent chance of showers, mainly before 4am. Cloudy, with a low around 58. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Monday
A 20 percent chance of showers before 1pm. Cloudy, with a high near 64. Northeast wind around 10 mph, with gusts as high as 20 mph.
Monday Night
Mostly cloudy, with a low around 53. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday
A 20 percent chance of showers. Partly sunny, with a high near 66. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday Night
Mostly cloudy, with a low around 51.
Wednesday
Mostly sunny, with a high near 68.
Wednesday Night
Partly cloudy, with a low around 51.
Thursday
Mostly sunny, with a high near 70.
Thursday Night
Mostly cloudy, with a low around 52.
Friday
Partly sunny, with a high near 71.
Friday Night
Partly cloudy, with a low around 50.
Saturday
Partly sunny, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Herscher IL
 41.04°N 88.11°W
Last Update:
1:21 pm CDT Sep 20, 2026
Forecast Valid:
1pm CDT Sep 20, 2026-6pm CDT Sep 26, 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