Tracking Storm System Across the Eastern U.S.

A storm system will continue to produce widespread showers and thunderstorms as it progresses eastward across the central U.S. into the Northeast through the weekend. There are risks of severe thunderstorms and excessive rainfall on Saturday from the Ozarks into the mid-Mississippi River Valley with potential for damaging winds, large hail, tornadoes, and flash flooding. Read More >

Hazardous Weather Conditions

Current conditions at

Lewis University Airport (KLOT)

Lat: 41.6°NLon: 88.1°WElev: 669ft.

Fair

75°F

24°C

Humidity 47%
Wind Speed S 12 mph
Barometer 29.80 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 17 Oct 4:45 pm CDT
Extended Forecast for

4 Miles SSW Naperville IL

  • Tonight

    Tonight: A slight chance of showers between 2am and 3am, then a chance of showers and thunderstorms after 3am.  Mostly cloudy, with a low around 62. South wind 10 to 15 mph, with gusts as high as 20 mph.  Chance of precipitation is 50%.

    Low: 62 °F

    Partly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 10am, then a chance of showers and thunderstorms after 10am.  Mostly cloudy, with a high near 74. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm.  Low around 50. South southwest wind 5 to 15 mph becoming northwest after midnight. Winds could gust as high as 25 mph.  Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    Low: 50 °F

    Showers

  • Sunday

    Sunday: A 50 percent chance of showers before 1pm.  Mostly cloudy, then gradually becoming sunny, with a high near 58. Breezy, with a northwest wind 20 to 25 mph, with gusts as high as 35 mph.

    High: 58 °F

    Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 40. West wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 40 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Monday Night

    Monday Night: A 40 percent chance of showers before 1am.  Partly cloudy, with a low around 45.

    Low: 45 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 54. Breezy.

    High: 54 °F

    Mostly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

Detailed Forecast

Tonight
A slight chance of showers between 2am and 3am, then a chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 62. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Saturday
Showers likely and possibly a thunderstorm before 10am, then a chance of showers and thunderstorms after 10am. Mostly cloudy, with a high near 74. South southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and possibly a thunderstorm. Low around 50. South southwest wind 5 to 15 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Sunday
A 50 percent chance of showers before 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 58. Breezy, with a northwest wind 20 to 25 mph, with gusts as high as 35 mph.
Sunday Night
Mostly clear, with a low around 40. West wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 65.
Monday Night
A 40 percent chance of showers before 1am. Partly cloudy, with a low around 45.
Tuesday
Mostly sunny, with a high near 54. Breezy.
Tuesday Night
Partly cloudy, with a low around 38.
Wednesday
Sunny, with a high near 57.
Wednesday Night
Partly cloudy, with a low around 40.
Thursday
Mostly sunny, with a high near 62.
Thursday Night
Partly cloudy, with a low around 40.
Friday
Sunny, with a high near 61.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Naperville IL
 41.72°N 88.18°W
4:11 pm CDT Oct 17, 2025
5pm CDT Oct 17, 2025-6pm CDT Oct 24, 2025
 
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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