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

Lewis University Airport (KLOT)

Lat: 41.6°NLon: 88.1°WElev: 669ft.

Fair

45°F

7°C

Humidity 81%
Wind Speed E 6 mph
Barometer 29.96 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 21 Mar 1:35 am CDT
Extended Forecast for

Chicago/Romeoville, Lewis University Airport IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 40. East wind around 5 mph.

    Low: 40 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 78. East southeast wind 5 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph.

    High: 78 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 45. Southwest wind 10 to 15 mph becoming north northeast after midnight. Winds could gust as high as 20 mph.

    Low: 45 °F

    Mostly Clear

  • Sunday

    Sunday: A 40 percent chance of rain, mainly after 1pm. Mostly cloudy, with a high near 47. Breezy, with a north northeast wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 47 °F

    Chance Rain
    and Breezy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 30. North wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 30 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 46.

    High: 46 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 32.

    Low: 32 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 58.

    High: 58 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 40. East wind around 5 mph.
Saturday
Mostly sunny, with a high near 78. East southeast wind 5 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
Mostly clear, with a low around 45. Southwest wind 10 to 15 mph becoming north northeast after midnight. Winds could gust as high as 20 mph.
Sunday
A 40 percent chance of rain, mainly after 1pm. Mostly cloudy, with a high near 47. Breezy, with a north northeast wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Mostly cloudy, with a low around 30. North wind 10 to 15 mph, with gusts as high as 25 mph.
Monday
Mostly sunny, with a high near 46.
Monday Night
Mostly cloudy, with a low around 32.
Tuesday
Mostly cloudy, with a high near 58.
Tuesday Night
Mostly cloudy, with a low around 39.
Wednesday
Mostly cloudy, with a high near 56.
Wednesday Night
Mostly cloudy, with a low around 47.
Thursday
A chance of showers. Mostly cloudy, with a high near 66.
Thursday Night
Mostly cloudy, with a low around 33.
Friday
Partly sunny, with a high near 46.
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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:
1:11 am CDT Mar 21, 2026
Forecast Valid:
1am CDT Mar 21, 2026-6pm CDT Mar 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation