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.

Fog/Mist

73°F

23°C

Humidity 100%
Wind Speed SE 7 mph
Barometer 29.95 in
Dewpoint 73°F (23°C)
Visibility 1.00 mi
Last update 13 Aug 9:45 am CDT
Extended Forecast for

4 Miles SW Naperville IL

Flood Watch August 13, 07:00pm until August 14, 10:00am
Click here for hazard details and duration
Flood Watch

  • Today

    Today: A slight chance of showers between noon and 1pm, then a chance of showers and thunderstorms after 1pm. Cloudy, with a high near 79. East wind 5 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 50%.

    High: 79 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm. Cloudy, with a low around 66. East northeast wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.

    Low: 66 °F

    Showers
    Likely

  • Friday

    Friday: Showers and thunderstorms likely, mainly before 3pm. Mostly cloudy, with a high near 79. East wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Showers
    Likely then
    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 68. East northeast wind 5 to 10 mph. Chance of precipitation is 60%.

    Low: 68 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm, then a slight chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 84. Southeast wind around 10 mph becoming south southwest in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 60%.

    High: 84 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.

    Low: 71 °F

    Chance
    T-storms then
    Showers
    Likely

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 83.

    High: 83 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 66.

    Low: 66 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

Detailed Forecast

Today
A slight chance of showers between noon and 1pm, then a chance of showers and thunderstorms after 1pm. Cloudy, with a high near 79. East wind 5 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 50%.
Tonight
Showers likely and possibly a thunderstorm. Cloudy, with a low around 66. East northeast wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.
Friday
Showers and thunderstorms likely, mainly before 3pm. Mostly cloudy, with a high near 79. East wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 68. East northeast wind 5 to 10 mph. Chance of precipitation is 60%.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a slight chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 84. Southeast wind around 10 mph becoming south southwest in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 60%.
Saturday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
Sunday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 83.
Sunday Night
Mostly cloudy, with a low around 66.
Monday
Mostly sunny, with a high near 79.
Monday Night
Mostly clear, with a low around 60.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 63.
Wednesday
A chance of showers. Partly sunny, with a high near 79.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Naperville IL
 41.73°N 88.21°W
Last Update:
10:01 am CDT Aug 13, 2026
Forecast Valid:
10am CDT Aug 13, 2026-6pm CDT Aug 19, 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