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.

Mostly Cloudy

41°F

5°C

Humidity 100%
Wind Speed NE 7 mph
Barometer 29.96 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 1 May 1:35 am CDT
Extended Forecast for

Romeoville IL

  • Overnight

    Overnight: A 50 percent chance of showers. Mostly cloudy, with a low around 40. North wind around 5 mph.

    Low: 40 °F

    Chance
    Showers

  • Friday

    Friday: A slight chance of showers before 7am, then a slight chance of showers after 3pm. Partly sunny, with a high near 51. North wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 51 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: A 10 percent chance of showers before 7pm. Widespread frost, mainly after 5am. Otherwise, partly cloudy, with a low around 34. Northeast wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.

    Low: 34 °F

    Slight Chance
    Showers then
    Frost

  • Saturday

    Saturday: Widespread frost, mainly before 7am. Otherwise, mostly sunny, with a high near 55. Light north northwest wind becoming northwest 5 to 10 mph in the morning. Winds could gust as high as 15 mph.

    High: 55 °F

    Frost then
    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 39. West northwest wind 5 to 10 mph becoming south in the evening. Winds could gust as high as 15 mph.

    Low: 39 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 64. Chance of precipitation is 20%.

    High: 64 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 48. Chance of precipitation is 30%.

    Low: 48 °F

    Chance
    Showers

  • Monday

    Monday: A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 48.

    Low: 48 °F

    Chance
    T-storms

Detailed Forecast

Overnight
A 50 percent chance of showers. Mostly cloudy, with a low around 40. North wind around 5 mph.
Friday
A slight chance of showers before 7am, then a slight chance of showers after 3pm. Partly sunny, with a high near 51. North wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Friday Night
A 10 percent chance of showers before 7pm. Widespread frost, mainly after 5am. Otherwise, partly cloudy, with a low around 34. Northeast wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.
Saturday
Widespread frost, mainly before 7am. Otherwise, mostly sunny, with a high near 55. Light north northwest wind becoming northwest 5 to 10 mph in the morning. Winds could gust as high as 15 mph.
Saturday Night
Partly cloudy, with a low around 39. West northwest wind 5 to 10 mph becoming south in the evening. Winds could gust as high as 15 mph.
Sunday
A slight chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 64. Chance of precipitation is 20%.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 48. Chance of precipitation is 30%.
Monday
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 74.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 48.
Tuesday
A chance of showers. Partly sunny, with a high near 61.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 43.
Wednesday
A chance of showers. Partly sunny, with a high near 58.
Wednesday Night
Mostly cloudy, with a low around 40.
Thursday
Mostly sunny, with a high near 58.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Romeoville IL
 41.66°N 88.1°W
Last Update:
1:21 am CDT May 1, 2026
Forecast Valid:
1am CDT May 1, 2026-6pm CDT May 7, 2026
 
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