Heavy Rain and Flash Flooding in the West; Heat Expands in the Central U.S.

Monsoonal moisture will produce showers and thunderstorms with heavy rain over parts of the Southwest, Great Basin, and Central Rockies through Monday. Flash flooding is possible, especially in and around burn scars and in areas of steep terrain. Heat will persist across the Central U.S. early this week, spreading into the Ohio Valley and Mid-Atlantic later this week. Read More >

Hazardous Weather Conditions

Current conditions at

Greater Kankakee Airport (KIKK)

Lat: 41.07°NLon: 87.85°WElev: 617ft.

Fair

82°F

28°C

Humidity 66%
Wind Speed SW 12 G 16 mph
Barometer 30.03 in
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 30 Aug 2:35 pm CDT
Extended Forecast for

Herscher IL

  • This Afternoon

    This Afternoon: Scattered showers and thunderstorms before 4pm, then isolated showers between 4pm and 5pm, then a slight chance of showers and thunderstorms after 5pm.  Mostly cloudy, with a high near 82. South wind around 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 30%.

    High: 82 °F

    Scattered
    Showers

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 8pm.  Mostly cloudy, with a low around 70. South wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 70 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 91. Heat index values as high as 97. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 91 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 74. South wind around 5 mph, with gusts as high as 15 mph.

    Low: 74 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 93. Southwest wind around 5 mph, with gusts as high as 10 mph.

    High: 93 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 95.

    High: 95 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Scattered showers and thunderstorms before 4pm, then isolated showers between 4pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 82. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Tonight
A 20 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 70. South wind 5 to 10 mph, with gusts as high as 15 mph.
Monday
Partly sunny, with a high near 91. Heat index values as high as 97. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Monday Night
Partly cloudy, with a low around 74. South wind around 5 mph, with gusts as high as 15 mph.
Tuesday
Mostly sunny, with a high near 93. Southwest wind around 5 mph, with gusts as high as 10 mph.
Tuesday Night
Mostly clear, with a low around 75.
Wednesday
Sunny and hot, with a high near 95.
Wednesday Night
Mostly clear, with a low around 74.
Thursday
Mostly sunny, with a high near 92.
Thursday Night
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70.
Friday
Mostly sunny, with a high near 90.
Friday Night
Partly cloudy, with a low around 68.
Saturday
Mostly sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
Herscher IL
 41.04°N 88.08°W
2:46 pm CDT Aug 30, 2026
2pm CDT Aug 30, 2026-6pm CDT Sep 5, 2026
 
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Additional Resources

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