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

Joliet Regional Airport (KJOT)

Lat: 41.52°NLon: 88.18°WElev: 572ft.

Light Drizzle

71°F

22°C

Humidity 97%
Wind Speed Calm
Barometer 29.95 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 19 Sep 1:55 pm CDT
Extended Forecast for

Wilmington IL

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms, mainly before 3pm. Cloudy, with a high near 76. South wind around 5 mph, with gusts as high as 10 mph.

    High: 76 °F

    Chance
    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 11pm. Low around 67. East southeast wind around 5 mph becoming west after midnight. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 67 °F

    Showers

  • Sunday

    Sunday: Showers and possibly a thunderstorm before 4pm, then a chance of showers. Temperature falling to around 65 by 5pm. Northeast wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 71 °F⇓

    Showers

  • Sunday Night

    Sunday Night: A chance of showers before 9pm, then a chance of showers after 1am. Mostly cloudy, with a low around 57. East northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    Low: 57 °F

    Chance
    Showers

  • Monday

    Monday: A 50 percent chance of showers. Mostly cloudy, with a high near 66. East northeast wind around 15 mph, with gusts as high as 20 mph.

    High: 66 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms. Mostly cloudy, with a high near 64. Chance of precipitation is 40%.

    High: 64 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 66.

    High: 66 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly before 3pm. Cloudy, with a high near 76. South wind around 5 mph, with gusts as high as 10 mph.
Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 11pm. Low around 67. East southeast wind around 5 mph becoming west after midnight. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Showers and possibly a thunderstorm before 4pm, then a chance of showers. Temperature falling to around 65 by 5pm. Northeast wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
A chance of showers before 9pm, then a chance of showers after 1am. Mostly cloudy, with a low around 57. East northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Monday
A 50 percent chance of showers. Mostly cloudy, with a high near 66. East northeast wind around 15 mph, with gusts as high as 20 mph.
Monday Night
A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 53.
Tuesday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 64. Chance of precipitation is 40%.
Tuesday Night
Mostly cloudy, with a low around 53.
Wednesday
Partly sunny, with a high near 66.
Wednesday Night
Mostly cloudy, with a low around 54.
Thursday
Partly sunny, with a high near 69.
Thursday Night
Mostly cloudy, with a low around 55.
Friday
Partly sunny, with a high near 72.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Wilmington IL
 41.31°N 88.15°W
Last Update:
1:46 pm CDT Sep 19, 2026
Forecast Valid:
2pm CDT Sep 19, 2026-6pm CDT Sep 25, 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