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

76°F

24°C

Humidity 54%
Wind Speed Vrbl 6 mph
Barometer 29.94 in (1013.8 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 11 Oct 2:52 pm CDT
Extended Forecast for

Saint Charles IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 79. South southwest wind around 5 mph.

    High: 79 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 59. South wind around 5 mph.

    Low: 59 °F

    Increasing
    Clouds

  • Columbus Day

    Columbus Day: Mostly sunny, with a high near 86. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 86 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 69. Southwest wind around 10 mph, with gusts as high as 15 mph.

    Low: 69 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 82. West wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 82 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers before 10pm, then a chance of showers and thunderstorms between 10pm and 1am, then showers likely after 1am. Partly cloudy, with a low around 60. Chance of precipitation is 70%.

    Low: 60 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 71.

    High: 71 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy

  • Thursday

    Thursday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 67.

    High: 67 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Sunny, with a high near 79. South southwest wind around 5 mph.
Tonight
Increasing clouds, with a low around 59. South wind around 5 mph.
Columbus Day
Mostly sunny, with a high near 86. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly clear, with a low around 69. Southwest wind around 10 mph, with gusts as high as 15 mph.
Tuesday
Sunny, with a high near 82. West wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
A chance of showers before 10pm, then a chance of showers and thunderstorms between 10pm and 1am, then showers likely after 1am. Partly cloudy, with a low around 60. Chance of precipitation is 70%.
Wednesday
A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 71.
Wednesday Night
Mostly cloudy, with a low around 54.
Thursday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 67.
Thursday Night
A chance of showers before 1am. Mostly cloudy, with a low around 49.
Friday
Partly sunny, with a high near 59. Breezy.
Friday Night
Partly cloudy, with a low around 36.
Saturday
Sunny, with a high near 54.
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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:
2:21 pm CDT Oct 11, 2026
Forecast Valid:
3pm CDT Oct 11, 2026-6pm CDT Oct 17, 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