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.

Fog/Mist

64°F

18°C

Humidity 100%
Wind Speed W 6 mph
Barometer 29.94 in
Dewpoint 64°F (18°C)
Visibility 1.00 mi
Last update 25 Jun 6:50 am CDT
Extended Forecast for

Naperville IL

  • Today

    Today: Mostly sunny, with a high near 78. West northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 78 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 58. Northwest wind around 5 mph becoming east after midnight. Winds could gust as high as 10 mph.

    Low: 58 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of showers, mainly after noon. Mostly cloudy, with a high near 74. East northeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 74 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 60. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 60 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 80. East wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 80 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy
    then Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 88.

    High: 88 °F

    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 74.

    Low: 74 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 93.

    High: 93 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 78. West northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Tonight
Mostly cloudy, with a low around 58. Northwest wind around 5 mph becoming east after midnight. Winds could gust as high as 10 mph.
Friday
A 30 percent chance of showers, mainly after noon. Mostly cloudy, with a high near 74. East northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 60. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday
Mostly sunny, with a high near 80. East wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 65.
Sunday
A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 88.
Sunday Night
Partly cloudy, with a low around 74.
Monday
Mostly sunny, with a high near 93.
Monday Night
Mostly clear, with a low around 76.
Tuesday
Sunny, with a high near 94.
Tuesday Night
Mostly clear, with a low around 76.
Wednesday
Sunny, with a high near 94.
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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:
5:11 am CDT Jun 25, 2026
Forecast Valid:
7am CDT Jun 25, 2026-6pm CDT Jul 1, 2026
 
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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