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

Hazardous Weather Conditions

Current conditions at

St. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

74°F

23°C

Humidity 69%
Wind Speed SE 12 mph
Barometer 29.79 in (1008.3 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 21 Jun 9:54 am CDT
Extended Forecast for

4 Miles E Kane IL

Flood Watch until June 22, 01:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch until June 22, 01:00am

    NOW until 1:00am Mon

    Flood Watch

  • Today

    High: 77 °F

    Heavy Rain

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly before 9pm. Mostly cloudy, with a low around 59. Southwest wind 9 to 11 mph becoming northwest after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 50%.

    Low: 59 °F

    Scattered
    T-storms then
    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 75. North wind 10 to 13 mph, with gusts as high as 20 mph.

    High: 75 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 56. North wind 5 to 7 mph becoming calm in the evening.

    Low: 56 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 79. Light northeast wind.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 82.

    High: 82 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

Detailed Forecast

Today
Showers and thunderstorms, mainly before 4pm. Some of the storms could produce heavy rainfall. High near 77. South wind 13 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 90%.
Tonight
Scattered showers and thunderstorms, mainly before 9pm. Mostly cloudy, with a low around 59. Southwest wind 9 to 11 mph becoming northwest after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 50%.
Monday
Mostly cloudy, with a high near 75. North wind 10 to 13 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 56. North wind 5 to 7 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 79. Light northeast wind.
Tuesday Night
Mostly clear, with a low around 59.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 82.
Wednesday Night
Partly cloudy, with a low around 61.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 81.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 59. Chance of precipitation is 20%.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 82.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Kane IL
 39.18°N 90.29°W (Elev. 502 ft)
Last Update:
8:51 am CDT Jun 21, 2026
Forecast Valid:
10am CDT Jun 21, 2026-6pm CDT Jun 27, 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