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

Lansing Municipal Airport (KIGQ)

Lat: 41.54°NLon: 87.53°WElev: 607ft.

Fair

47°F

8°C

Humidity 64%
Wind Speed S 5 mph
Barometer 30.02 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 15 May 1:55 am CDT
Extended Forecast for

South Chicago Heights IL

  • Overnight

    Overnight: A 30 percent chance of showers, mainly between 3am and 4am. Mostly cloudy, with a steady temperature around 51. South wind around 5 mph, with gusts as high as 10 mph.

    Low: 51 °F

    Chance
    Showers

  • Friday

    Friday: A slight chance of showers between 7am and 9am. Partly sunny, with a high near 71. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

    High: 71 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Partly cloudy, with a low around 57. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    Partly Cloudy
    then Showers
    Likely

  • Saturday

    Saturday: A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82. South southwest wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.

    High: 82 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. South wind 5 to 10 mph. Chance of precipitation is 40%.

    Low: 60 °F

    Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Monday

    Monday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 83. Breezy.

    High: 83 °F

    Showers
    Likely and
    Breezy

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 66.

    Low: 66 °F

    Showers
    Likely

Detailed Forecast

Overnight
A 30 percent chance of showers, mainly between 3am and 4am. Mostly cloudy, with a steady temperature around 51. South wind around 5 mph, with gusts as high as 10 mph.
Friday
A slight chance of showers between 7am and 9am. Partly sunny, with a high near 71. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Partly cloudy, with a low around 57. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82. South southwest wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. South wind 5 to 10 mph. Chance of precipitation is 40%.
Sunday
Mostly sunny, with a high near 84.
Sunday Night
Mostly clear, with a low around 65.
Monday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 83. Breezy.
Monday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 66.
Tuesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 84. Breezy.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 55.
Wednesday
Partly sunny, with a high near 69.
Wednesday Night
Partly cloudy, with a low around 48.
Thursday
Partly sunny, with a high near 66.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Chicago Heights IL
 41.48°N 87.65°W
Last Update:
1:21 am CDT May 15, 2026
Forecast Valid:
2am CDT May 15, 2026-6pm CDT May 21, 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