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.

Fair

81°F

27°C

Humidity 74%
Wind Speed SE 7 mph
Barometer 30.09 in
Dewpoint 72°F (22°C)
Visibility 9.00 mi
Heat Index85°F (29°C)
Last update 15 Jul 8:50 am CDT
Extended Forecast for

Chicago/Romeoville, Lewis University Airport IL

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 90. South wind 5 to 10 mph.

    High: 90 °F

    Sunny then
    Slight Chance
    T-storms

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 72. South wind around 5 mph becoming calm after midnight.

    Low: 72 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. Heat index values as high as 101. Light south southwest wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 15 mph.

    High: 91 °F

    Partly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 70. Southwest wind 5 to 10 mph. Chance of precipitation is 60%.

    Low: 70 °F

    T-storms
    Likely

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79. West wind around 10 mph becoming north northeast in the afternoon. Winds could gust as high as 20 mph.

    High: 79 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 61.

    Low: 61 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Friday Night

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

    Low: 64 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers and thunderstorms. Partly sunny, with a high near 85.

    High: 85 °F

    Chance
    T-storms

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 90. South wind 5 to 10 mph.
Tonight
A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 72. South wind around 5 mph becoming calm after midnight.
Wednesday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. Heat index values as high as 101. Light south southwest wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 15 mph.
Wednesday Night
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 70. Southwest wind 5 to 10 mph. Chance of precipitation is 60%.
Thursday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79. West wind around 10 mph becoming north northeast in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 61.
Friday
Mostly sunny, with a high near 81.
Friday Night
Partly cloudy, with a low around 64.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 85.
Saturday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 69.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 86.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 87.
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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:
9:07 am CDT Jul 15, 2025
Forecast Valid:
10am CDT Jul 15, 2025-6pm CDT Jul 21, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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