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.

Fair

68°F

20°C

Humidity 78%
Wind Speed Calm
Barometer 30.02 in (1016.1 mb)
Dewpoint 61°F (16°C)
Visibility 7.00 mi
Last update 13 Jul 9:52 pm CDT
Extended Forecast for

Saint Charles IL

  • Tonight

    Tonight: Widespread haze before midnight. Patchy fog after midnight. Otherwise, mostly clear, with a low around 63. Calm wind.

    Low: 63 °F

    Haze then
    Patchy Fog

  • Monday

    Monday: Patchy fog before 8am. Otherwise, sunny, with a high near 87. Calm wind becoming west southwest around 5 mph in the morning.

    High: 87 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 66. West wind around 5 mph becoming calm in the evening.

    Low: 66 °F

    Mostly Clear

  • Tuesday

    Tuesday: A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Sunny, with a high near 90. Heat index values as high as 95. Calm wind becoming south around 5 mph in the morning. Winds could gust as high as 15 mph. Chance of precipitation is 20%.

    High: 90 °F

    Sunny then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of thunderstorms before 1am, then a slight chance of showers and thunderstorms between 1am and 4am, then a slight chance of showers after 4am. Partly cloudy, with a low around 71. South wind around 5 mph. Chance of precipitation is 20%.

    Low: 71 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 7am. Partly sunny, with a high near 88. Chance of precipitation is 50%.

    High: 88 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.

    Low: 70 °F

    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 84.

    High: 84 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers before 1am. Mostly cloudy, with a low around 64.

    Low: 64 °F

    Chance
    Showers

Detailed Forecast

Tonight
Widespread haze before midnight. Patchy fog after midnight. Otherwise, mostly clear, with a low around 63. Calm wind.
Monday
Patchy fog before 8am. Otherwise, sunny, with a high near 87. Calm wind becoming west southwest around 5 mph in the morning.
Monday Night
Mostly clear, with a low around 66. West wind around 5 mph becoming calm in the evening.
Tuesday
A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Sunny, with a high near 90. Heat index values as high as 95. Calm wind becoming south around 5 mph in the morning. Winds could gust as high as 15 mph. Chance of precipitation is 20%.
Tuesday Night
A slight chance of thunderstorms before 1am, then a slight chance of showers and thunderstorms between 1am and 4am, then a slight chance of showers after 4am. Partly cloudy, with a low around 71. South wind around 5 mph. Chance of precipitation is 20%.
Wednesday
A chance of showers, with thunderstorms also possible after 7am. Partly sunny, with a high near 88. Chance of precipitation is 50%.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Thursday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 84.
Thursday Night
A chance of showers before 1am. Mostly cloudy, with a low around 64.
Friday
Partly sunny, with a high near 81.
Friday Night
Partly cloudy, with a low around 63.
Saturday
A chance of showers. Partly sunny, with a high near 83.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 66.
Sunday
A chance of showers. Mostly sunny, with a high near 84.
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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:
9:56 pm CDT Jul 13, 2025
Forecast Valid:
10pm CDT Jul 13, 2025-6pm CDT Jul 20, 2025
 
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