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

Excessive Rainfall and Significant Flooding in the Upper Midwest This Weekend

Heavy to excessive rainfall is expected over the weekend across eastern Iowa, northern Missouri, northwest Illinois and southern Wisconsin. Numerous flash floods, some with significant impacts, are expected in these areas. Heaviest rainfall will occur overnight Saturday and Sunday, so be sure to have multiple ways to receive warnings. Read More >

Hazardous Weather Conditions

Current conditions at

Lansing Municipal Airport (KIGQ)

Lat: 41.54°NLon: 87.53°WElev: 607ft.

Fair

90°F

32°C

Humidity 55%
Wind Speed S 13 mph
Barometer 30.04 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 9 Aug 1:55 pm CDT
Extended Forecast for

Calumet City IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 93. Heat index values as high as 99. South wind around 15 mph, with gusts as high as 25 mph.

    High: 93 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 74. South wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 74 °F

    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 90. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 90 °F

    Partly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 73. South wind around 5 mph, with gusts as high as 10 mph.

    Low: 73 °F

    Partly Cloudy
    then Chance
    T-storms

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 88. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 88 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.

    Low: 72 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.

    High: 87 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers after 1pm. Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny
    then Chance
    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 93. Heat index values as high as 99. South wind around 15 mph, with gusts as high as 25 mph.
Tonight
Partly cloudy, with a low around 74. South wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 90. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 73. South wind around 5 mph, with gusts as high as 10 mph.
Monday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 88. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.
Tuesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
Tuesday Night
Partly cloudy, with a low around 70.
Wednesday
A chance of showers after 1pm. Mostly sunny, with a high near 84.
Wednesday Night
Partly cloudy, with a low around 69.
Thursday
A chance of showers. Mostly sunny, with a high near 84.
Thursday Night
Partly cloudy, with a low around 70.
Friday
Mostly sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Calumet City IL
 41.61°N 87.52°W
Last Update:
2:06 pm CDT Aug 9, 2025
Forecast Valid:
2pm CDT Aug 9, 2025-6pm CDT Aug 15, 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