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.

Fair

82°F

28°C

Humidity 51%
Wind Speed S 9 mph
Barometer 30.14 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 4 Oct 11:45 am CDT
Extended Forecast for

Naperville IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 89. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 89 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 63. South wind 5 to 10 mph.

    Low: 63 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 85. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 85 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 64. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 64 °F

    Mostly Clear

  • Monday

    Monday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 85. Southwest wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 40%.

    High: 85 °F

    Sunny then
    Chance
    Showers

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 58. Chance of precipitation is 70%.

    Low: 58 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 67.

    High: 67 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 89. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 63. South wind 5 to 10 mph.
Sunday
Sunny, with a high near 85. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Mostly clear, with a low around 64. South wind around 10 mph, with gusts as high as 20 mph.
Monday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 85. Southwest wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 40%.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 58. Chance of precipitation is 70%.
Tuesday
A 40 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 67.
Tuesday Night
Partly cloudy, with a low around 47.
Wednesday
Sunny, with a high near 65.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Sunny, with a high near 67.
Thursday Night
Partly cloudy, with a low around 46.
Friday
Mostly sunny, with a high near 71.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Naperville IL
 41.74°N 88.15°W
Last Update:
9:41 am CDT Oct 4, 2025
Forecast Valid:
12pm CDT Oct 4, 2025-6pm CDT Oct 10, 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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation