National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Chicago / West Chicago, Dupage Airport (KDPA)

Lat: 41.9°NLon: 88.25°WElev: 758ft.

Fair

25°C

77°F

Humidity 52%
Wind Speed W 28 G 43 km/h
Barometer 1013.0 mb (29.93 in)
Dewpoint 14°C (58°F)
Visibility 16 km
Heat Index26°C (79°F)
Last update 12 Jun 12:52 pm CDT
Extended Forecast for

Saint Charles IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 27. West wind around 25 km/h, with gusts as high as 40 km/h.

    High: 27 °C

    Sunny

  • Tonight

    Tonight: Clear, with a low around 16. Southwest wind 10 to 15 km/h, with gusts as high as 25 km/h.

    Low: 16 °C

    Clear

  • Saturday

    Saturday: Increasing clouds, with a high near 29. Southwest wind 15 to 20 km/h increasing to 20 to 25 km/h in the morning. Winds could gust as high as 40 km/h.

    High: 29 °C

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: Showers and thunderstorms, mainly before 10pm, then showers and possibly a thunderstorm after 11pm. Low around 16. West southwest wind 15 to 20 km/h becoming northwest after midnight. Winds could gust as high as 30 km/h. Chance of precipitation is 90%.

    Low: 16 °C

    T-storms

  • Sunday

    Sunday: A slight chance of thunderstorms before 7am. Mostly sunny, with a high near 22. Northwest wind 20 to 25 km/h, with gusts as high as 40 km/h. Chance of precipitation is 10%.

    High: 22 °C

    Slight Chance
    T-storms then
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 11.

    Low: 11 °C

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 24.

    High: 24 °C

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 12.

    Low: 12 °C

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 24.

    High: 24 °C

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 27. West wind around 25 km/h, with gusts as high as 40 km/h.
Tonight
Clear, with a low around 16. Southwest wind 10 to 15 km/h, with gusts as high as 25 km/h.
Saturday
Increasing clouds, with a high near 29. Southwest wind 15 to 20 km/h increasing to 20 to 25 km/h in the morning. Winds could gust as high as 40 km/h.
Saturday Night
Showers and thunderstorms, mainly before 10pm, then showers and possibly a thunderstorm after 11pm. Low around 16. West southwest wind 15 to 20 km/h becoming northwest after midnight. Winds could gust as high as 30 km/h. Chance of precipitation is 90%.
Sunday
A slight chance of thunderstorms before 7am. Mostly sunny, with a high near 22. Northwest wind 20 to 25 km/h, with gusts as high as 40 km/h. Chance of precipitation is 10%.
Sunday Night
Mostly clear, with a low around 11.
Monday
Sunny, with a high near 24.
Monday Night
Partly cloudy, with a low around 12.
Tuesday
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 24.
Tuesday Night
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 13.
Wednesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 26.
Wednesday Night
Showers and possibly a thunderstorm. Mostly cloudy, with a low around 17. Breezy.
Thursday
Mostly sunny, with a high near 26.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Charles IL
 41.9°N 88.32°W
Last Update:
11:36 am CDT Jun 12, 2026
Forecast Valid:
1pm CDT Jun 12, 2026-6pm CDT Jun 18, 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