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

Hazardous Weather Conditions

Current conditions at

Lewis University Airport (KLOT)

Lat: 41.6°NLon: 88.1°WElev: 669ft.

Thunderstorm in Vicinity

77°F

25°C

Humidity 83%
Wind Speed NW 16 mph
Barometer 30.11 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 3 Jul 12:35 am CDT
Extended Forecast for

Chicago/Romeoville, Lewis University Airport IL

  • Overnight

    Overnight: Showers and thunderstorms, mainly before 3am. Some of the storms could produce heavy rainfall. Low around 75. South southwest wind around 5 mph becoming west. Winds could gust as high as 10 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 75 °F

    Heavy Rain

  • Friday

    Friday: Showers and thunderstorms likely, mainly after 3pm. Mostly sunny, with a high near 91. Heat index values as high as 101. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 91 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Friday Night

    Friday Night: Showers and thunderstorms likely, mainly before 7pm. Mostly cloudy, with a low around 72. Southwest wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 72 °F

    T-storms
    Likely

  • Independence Day

    Independence Day: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 86. Heat index values as high as 95. Southwest wind 5 to 10 mph becoming east southeast in the morning. Chance of precipitation is 70%.

    High: 86 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 68. West southwest wind 5 to 10 mph becoming east southeast after midnight. Chance of precipitation is 60%.

    Low: 68 °F

    Showers
    Likely

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84.

    High: 84 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 65.

    Low: 65 °F

    Slight Chance
    T-storms

  • Monday

    Monday: Partly sunny, with a high near 83.

    High: 83 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

Detailed Forecast

Overnight
Showers and thunderstorms, mainly before 3am. Some of the storms could produce heavy rainfall. Low around 75. South southwest wind around 5 mph becoming west. Winds could gust as high as 10 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Friday
Showers and thunderstorms likely, mainly after 3pm. Mostly sunny, with a high near 91. Heat index values as high as 101. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Showers and thunderstorms likely, mainly before 7pm. Mostly cloudy, with a low around 72. Southwest wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Independence Day
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 86. Heat index values as high as 95. Southwest wind 5 to 10 mph becoming east southeast in the morning. Chance of precipitation is 70%.
Saturday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 68. West southwest wind 5 to 10 mph becoming east southeast after midnight. Chance of precipitation is 60%.
Sunday
A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84.
Sunday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 65.
Monday
Partly sunny, with a high near 83.
Monday Night
Partly cloudy, with a low around 64.
Tuesday
Mostly sunny, with a high near 86.
Tuesday Night
Partly cloudy, with a low around 65.
Wednesday
Mostly sunny, with a high near 87.
Wednesday Night
Partly cloudy, with a low around 66.
Thursday
A chance of showers. Mostly sunny, with a high near 86.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Chicago/Romeoville, Lewis University Airport IL
 41.61°N 88.1°W
Last Update:
12:31 am CDT Jul 3, 2026
Forecast Valid:
12am CDT Jul 3, 2026-6pm CDT Jul 9, 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