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

Tracking Weekend Storm Impacts

A storm and trailing cold front will continue to slowly move through the Gulf Coast and Southeast U.S. through this weekend with widespread rain showers and isolated thunderstorms. A fast-moving clipper storm may bring several inches of snow to the north-central Plains, Midwest, eastern Great Lakes, and Northeast regions this weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Lewis University Airport (KLOT)

Lat: 41.6°NLon: 88.1°WElev: 669ft.

Overcast

28°F

-2°C

Humidity 86%
Wind Speed N 17 G 25 mph
Barometer 30.12 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 7 Dec 9:45 am CST
Extended Forecast for

Lemont IL

Winter Weather Advisory December 7, 10:50am until December 7, 11:00am
Click here for hazard details and duration
...
  •  
    Winter Weather Advisory December 7, 10:50am until December 7, 11:00am

    NOW until 11:00am Sun

    Winter Weather Advisory

  • Today

    High: 30 °F⇓

    Patchy
    Blowing Snow

  • Tonight

    Tonight: A 40 percent chance of snow showers, mainly between 7pm and midnight. Mostly cloudy, with a steady temperature around 15. North wind 5 to 10 mph becoming east southeast after midnight.

    Low: 15 °F

    Chance Snow
    Showers

  • Monday

    Monday: Partly sunny, with a high near 23. East southeast wind around 5 mph becoming south in the afternoon.

    High: 23 °F

    Partly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 14. South southwest wind 5 to 15 mph, with gusts as high as 30 mph.

    Low: 14 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 37. Southwest wind around 15 mph, with gusts as high as 30 mph.

    High: 37 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Rain. Low around 34. Breezy. Chance of precipitation is 90%.

    Low: 34 °F

    Rain and
    Breezy

  • Wednesday

    Wednesday: A chance of rain and snow showers before noon, then a slight chance of snow showers. Mostly cloudy, with a high near 37. Chance of precipitation is 40%.

    High: 37 °F

    Chance
    Rain/Snow
    then Slight
    Chance Snow
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 20.

    Low: 20 °F

    Mostly Cloudy

Detailed Forecast

Today
Patchy blowing snow. Mostly cloudy, with a temperature falling to around 18 by 5pm. North wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
A 40 percent chance of snow showers, mainly between 7pm and midnight. Mostly cloudy, with a steady temperature around 15. North wind 5 to 10 mph becoming east southeast after midnight.
Monday
Partly sunny, with a high near 23. East southeast wind around 5 mph becoming south in the afternoon.
Monday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 14. South southwest wind 5 to 15 mph, with gusts as high as 30 mph.
Tuesday
Mostly cloudy, with a high near 37. Southwest wind around 15 mph, with gusts as high as 30 mph.
Tuesday Night
Rain. Low around 34. Breezy. Chance of precipitation is 90%.
Wednesday
A chance of rain and snow showers before noon, then a slight chance of snow showers. Mostly cloudy, with a high near 37. Chance of precipitation is 40%.
Wednesday Night
Mostly cloudy, with a low around 20.
Thursday
A chance of snow after noon. Mostly cloudy, with a high near 27.
Thursday Night
A chance of snow before midnight. Mostly cloudy, with a low around 10.
Friday
Partly sunny, with a high near 18.
Friday Night
Mostly cloudy, with a low around 0.
Saturday
Partly sunny, with a high near 12.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lemont IL
 41.67°N 87.98°W
Last Update:
10:41 am CST Dec 7, 2025
Forecast Valid:
10am CST Dec 7, 2025-6pm CST Dec 13, 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