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

68°F

20°C

Humidity 49%
Wind Speed S 16 G 29 mph
Barometer 29.58 in (1001.5 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 22 Mar 12:52 am CDT
Extended Forecast for

Saint Charles IL

  • Overnight

    Overnight: Partly cloudy, with a low around 46. South southwest wind 10 to 15 mph becoming north northwest. Winds could gust as high as 25 mph.

    Low: 46 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of rain after noon. Mostly cloudy, with a temperature falling to around 40 by 5pm. Breezy, with a north northeast wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 46 °F⇓

    Mostly Cloudy
    then Slight
    Chance Rain
    and Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 28. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 28 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 46. North wind around 5 mph, with gusts as high as 10 mph.

    High: 46 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 30. East wind around 5 mph becoming south after midnight. Winds could gust as high as 10 mph.

    Low: 30 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 57.

    High: 57 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 59.

    High: 59 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 46. South southwest wind 10 to 15 mph becoming north northwest. Winds could gust as high as 25 mph.
Sunday
A 20 percent chance of rain after noon. Mostly cloudy, with a temperature falling to around 40 by 5pm. Breezy, with a north northeast wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Partly cloudy, with a low around 28. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Monday
Mostly sunny, with a high near 46. North wind around 5 mph, with gusts as high as 10 mph.
Monday Night
Mostly cloudy, with a low around 30. East wind around 5 mph becoming south after midnight. Winds could gust as high as 10 mph.
Tuesday
Mostly cloudy, with a high near 57.
Tuesday Night
Mostly cloudy, with a low around 41.
Wednesday
Mostly cloudy, with a high near 59.
Wednesday Night
Mostly cloudy, with a low around 46.
Thursday
A chance of showers. Mostly cloudy, with a high near 68.
Thursday Night
Mostly cloudy, with a low around 31.
Friday
Partly sunny, with a high near 44.
Friday Night
Mostly clear, with a low around 27.
Saturday
Sunny, with a high near 53.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Charles IL
 41.93°N 88.32°W
Last Update:
1:21 am CDT Mar 22, 2026
Forecast Valid:
1am CDT Mar 22, 2026-6pm CDT Mar 28, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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