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

Hazardous Weather Conditions

Current conditions at

Chicago / West Chicago, Dupage Airport (KDPA)

Lat: 41.9°NLon: 88.25°WElev: 758ft.

Partly Cloudy

83°F

28°C

Humidity 55%
Wind Speed S 7 mph
Barometer 30.01 in (1015.7 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 4 Aug 12:52 pm CDT
Extended Forecast for

Saint Charles IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 84. South southwest wind around 10 mph.

    High: 84 °F

    Mostly Sunny

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after 3am. Mostly cloudy, with a low around 67. South southwest wind around 5 mph.

    Low: 67 °F

    Partly Cloudy
    then Chance
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms, mainly after 4pm. High near 77. West southwest wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 77 °F

    T-storms

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms, mainly before 10pm. Low around 63. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.

    Low: 63 °F

    T-storms then
    Chance
    T-storms

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 77. Calm wind becoming east around 5 mph in the afternoon.

    High: 77 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 84. South southwest wind around 10 mph.
Tonight
A 40 percent chance of showers and thunderstorms, mainly after 3am. Mostly cloudy, with a low around 67. South southwest wind around 5 mph.
Wednesday
Showers and thunderstorms, mainly after 4pm. High near 77. West southwest wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
Showers and thunderstorms, mainly before 10pm. Low around 63. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.
Thursday
A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 77. Calm wind becoming east around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 62.
Friday
Mostly sunny, with a high near 80.
Friday Night
Partly cloudy, with a low around 65.
Saturday
Mostly sunny, with a high near 81.
Saturday Night
A chance of showers after 1am. Partly cloudy, with a low around 65.
Sunday
A chance of showers. Partly sunny, with a high near 82.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 83.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Charles IL
 41.9°N 88.29°W
Last Update:
1:21 pm CDT Aug 4, 2026
Forecast Valid:
1pm CDT Aug 4, 2026-6pm CDT Aug 10, 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