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.

Light Rain Fog/Mist

68°F

20°C

Humidity 100%
Wind Speed SE 7 mph
Barometer 29.80 in
Dewpoint 68°F (20°C)
Visibility 5.00 mi
Last update 18 Jun 4:35 am CDT
Extended Forecast for

Lemont IL

  • Overnight

    Overnight: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71. South southwest wind around 5 mph.

    Low: 71 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Showers and thunderstorms, mainly after noon. High near 79. South southwest wind 5 to 10 mph becoming north in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

    High: 79 °F

    Chance
    T-storms then
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely before 1am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 63. West northwest wind around 10 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 63 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Juneteenth

    Juneteenth: A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 83. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 83 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 64. Southwest wind 5 to 10 mph.

    Low: 64 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 76.

    Low: 76 °F

    Clear

Detailed Forecast

Overnight
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71. South southwest wind around 5 mph.
Wednesday
Showers and thunderstorms, mainly after noon. High near 79. South southwest wind 5 to 10 mph becoming north in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Wednesday Night
Showers and thunderstorms likely before 1am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 63. West northwest wind around 10 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Juneteenth
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 83. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Thursday Night
Mostly clear, with a low around 64. Southwest wind 5 to 10 mph.
Friday
Mostly sunny, with a high near 86.
Friday Night
Mostly clear, with a low around 73.
Saturday
Sunny, with a high near 94.
Saturday Night
Clear, with a low around 76.
Sunday
Sunny and hot, with a high near 96.
Sunday Night
Clear, with a low around 75.
Monday
Sunny and hot, with a high near 95.
Monday Night
Mostly clear, with a low around 74.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 93.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lemont IL
 41.67°N 87.98°W
Last Update:
4:26 am CDT Jun 18, 2025
Forecast Valid:
4am CDT Jun 18, 2025-6pm CDT Jun 24, 2025
 
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