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.

Partly Cloudy and Breezy

81°F

27°C

Humidity 58%
Wind Speed S 21 G 30 mph
Barometer 29.84 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 17 May 7:45 pm CDT
Extended Forecast for

Lemont IL

  • Tonight

    Tonight: Mostly clear, with a low around 68. South wind around 15 mph, with gusts as high as 30 mph.

    Low: 68 °F

    Mostly Clear

  • Monday

    Monday: Showers and thunderstorms likely, mainly before 2pm. Mostly cloudy, with a high near 81. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 81 °F

    Breezy.
    Showers
    Likely then
    T-storms
    Likely

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 66. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.

    Low: 66 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 80. Breezy, with a south southwest wind 15 to 25 mph becoming west in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 80%.

    High: 80 °F

    Showers and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 50. North northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 50 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 48.

    Low: 48 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 68. South wind around 15 mph, with gusts as high as 30 mph.
Monday
Showers and thunderstorms likely, mainly before 2pm. Mostly cloudy, with a high near 81. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 66. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.
Tuesday
Showers and possibly a thunderstorm. High near 80. Breezy, with a south southwest wind 15 to 25 mph becoming west in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 80%.
Tuesday Night
Mostly cloudy, with a low around 50. North northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 62.
Wednesday Night
Partly cloudy, with a low around 43.
Thursday
Mostly sunny, with a high near 64.
Thursday Night
Mostly cloudy, with a low around 48.
Friday
Mostly cloudy, with a high near 70.
Friday Night
A chance of showers. Mostly cloudy, with a low around 52.
Saturday
Partly sunny, with a high near 75.
Saturday Night
Mostly cloudy, with a low around 56.
Sunday
Mostly sunny, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lemont IL
 41.65°N 88.01°W
Last Update:
2:41 pm CDT May 17, 2026
Forecast Valid:
8pm CDT May 17, 2026-6pm CDT May 24, 2026
 
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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