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

86°F

30°C

Humidity 89%
Wind Speed SE 14 mph
Barometer 29.99 in
Dewpoint 82°F (28°C)
Visibility 10.00 mi
Heat Index105°F (41°C)
Last update 18 Aug 3:45 pm CDT
Extended Forecast for

2 Miles ESE Lemont IL

Flood Watch until August 19, 04:00am
Severe T-storm Watch until August 18, 06:00pm
Click here for hazard details and duration
Flood Watch
Severe T-storm Watch
  •  
    Flood Watch until August 19, 04:00am
    Severe T-storm Watch until August 18, 06:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • This Afternoon

    High: 86 °F

    Severe
    Thunderstorms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 71. South southeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 71 °F

    T-storms
    Likely

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly before 10am. Mostly cloudy, with a high near 86. Southwest wind 5 to 10 mph becoming northwest in the afternoon.

    High: 86 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 70. North northeast wind around 5 mph, with gusts as high as 10 mph.

    Low: 70 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 80. North northeast wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 80 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Showers and thunderstorms likely, mainly after 5pm. Some of the storms could be severe. Partly sunny, with a steady temperature around 86. Heat index values as high as 100. South wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 71. South southeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly before 10am. Mostly cloudy, with a high near 86. Southwest wind 5 to 10 mph becoming northwest in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 70. North northeast wind around 5 mph, with gusts as high as 10 mph.
Wednesday
Mostly sunny, with a high near 80. North northeast wind 5 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 66.
Thursday
Sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 63.
Friday
Sunny, with a high near 84.
Friday Night
Partly cloudy, with a low around 66.
Saturday
Sunny, with a high near 80.
Saturday Night
Clear, with a low around 59.
Sunday
Sunny, with a high near 75.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Lemont IL
 41.65°N 87.96°W
Last Update:
3:27 pm CDT Aug 18, 2025
Forecast Valid:
3pm CDT Aug 18, 2025-6pm CDT Aug 24, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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