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

73°F

23°C

Humidity 94%
Wind Speed NE 8 mph
Barometer 29.72 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 18 Jun 2:45 pm CDT
Extended Forecast for

Lemont IL

Flood Watch until June 18, 08:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch until June 18, 08:00pm

    NOW until 8:00pm Wed

    Flood Watch

  • This Afternoon

    High: 78 °F

    Heavy Rain

  • Tonight

    Tonight: Showers and thunderstorms before 4am, then a chance of showers. Low around 63. West northwest wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 63 °F

    Showers then
    Chance
    Showers

  • Juneteenth

    Juneteenth: A 20 percent chance of showers before 10am. Mostly cloudy, then gradually becoming sunny, with a high near 82. West wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 82 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • 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 85. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 85 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 94. Breezy.

    High: 94 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Clear, with a low around 75.

    Low: 75 °F

    Clear

Detailed Forecast

This Afternoon
Showers and thunderstorms. Some of the storms could produce heavy rainfall. High near 78. East wind around 10 mph becoming north northeast. Winds could gust as high as 15 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers and thunderstorms before 4am, then a chance of showers. Low around 63. West northwest wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Juneteenth
A 20 percent chance of showers before 10am. Mostly cloudy, then gradually becoming sunny, with a high near 82. West 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 85. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Friday Night
Mostly clear, with a low around 72.
Saturday
Sunny, with a high near 94. Breezy.
Saturday Night
Clear, with a low around 75.
Sunday
Sunny and hot, with a high near 95.
Sunday Night
Clear, with a low around 75.
Monday
Sunny and hot, with a high near 96.
Monday Night
Mostly clear, with a low around 75.
Tuesday
A chance of showers. Mostly sunny, with a high near 93.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lemont IL
 41.65°N 88.01°W
Last Update:
3:26 pm CDT Jun 18, 2025
Forecast Valid:
3pm CDT Jun 18, 2025-6pm CDT Jun 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