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

Lewis University Airport (KLOT)

Lat: 41.6°NLon: 88.1°WElev: 669ft.

Overcast

23°F

-5°C

Humidity 80%
Wind Speed S 13 mph
Barometer 29.92 in
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill11°F (-12°C)
Last update 9 Dec 3:35 am CST
Extended Forecast for

Romeoville IL

  • Overnight

    Overnight: A 30 percent chance of snow before 4am. Mostly cloudy, with a steady temperature around 22. South southwest wind around 15 mph, with gusts as high as 30 mph.

    Low: 22 °F

    Chance Snow

  • Tuesday

    Tuesday: A slight chance of rain and sleet after 5pm. Cloudy, with a high near 35. Southwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

    High: 35 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Sleet

  • Tuesday Night

    Tuesday Night: Rain and sleet before midnight, then rain likely between midnight and 5am, then a chance of snow showers after 5am. Low around 31. Breezy, with a south wind 15 to 25 mph becoming west after midnight. Winds could gust as high as 35 mph. Chance of precipitation is 100%. Little or no snow and sleet accumulation expected.

    Low: 31 °F

    Breezy.
    Rain/Sleet
    then
    Rain/Snow
    Likely

  • Wednesday

    Wednesday: Snow showers, mainly before noon. High near 34. Breezy, with a northwest wind 15 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 34 °F

    Breezy. Snow
    Showers then
    Slight Chance
    Snow Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 16. West northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 16 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of snow after noon. Partly sunny, with a high near 24.

    High: 24 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Thursday Night

    Thursday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 14.

    Low: 14 °F

    Chance Snow

  • Friday

    Friday: A chance of snow. Mostly cloudy, with a high near 27.

    High: 27 °F

    Chance Snow

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 4.

    Low: 4 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 30 percent chance of snow before 4am. Mostly cloudy, with a steady temperature around 22. South southwest wind around 15 mph, with gusts as high as 30 mph.
Tuesday
A slight chance of rain and sleet after 5pm. Cloudy, with a high near 35. Southwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Tuesday Night
Rain and sleet before midnight, then rain likely between midnight and 5am, then a chance of snow showers after 5am. Low around 31. Breezy, with a south wind 15 to 25 mph becoming west after midnight. Winds could gust as high as 35 mph. Chance of precipitation is 100%. Little or no snow and sleet accumulation expected.
Wednesday
Snow showers, mainly before noon. High near 34. Breezy, with a northwest wind 15 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Wednesday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 16. West northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
A 20 percent chance of snow after noon. Partly sunny, with a high near 24.
Thursday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 14.
Friday
A chance of snow. Mostly cloudy, with a high near 27.
Friday Night
Mostly cloudy, with a low around 4.
Saturday
A chance of snow. Mostly cloudy and cold, with a high near 10.
Saturday Night
Partly cloudy, with a low around -3.
Sunday
Mostly sunny and cold, with a high near 10.
Sunday Night
Mostly cloudy, with a low around -1.
Monday
Mostly cloudy, with a high near 22.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Romeoville IL
 41.66°N 88.1°W
Last Update:
2:51 am CST Dec 9, 2025
Forecast Valid:
3am CST Dec 9, 2025-6pm CST Dec 15, 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