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

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

80°F

27°C

Humidity 85%
Wind Speed N 5 mph
Barometer 29.97 in (1014.4 mb)
Dewpoint 75°F (24°C)
Visibility 9.00 mi
Heat Index85°F (29°C)
Last update 14 Aug 7:54 pm CDT
Extended Forecast for

3 Miles SSW Batchtown IL

  • Tonight

    Tonight: Mostly clear, with a low around 70. Calm wind becoming east around 5 mph in the evening.

    Low: 70 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 93. Heat index values as high as 100. Southeast wind around 5 mph becoming light and variable.

    High: 93 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 75. East wind around 5 mph becoming calm in the evening.

    Low: 75 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 96. Heat index values as high as 106. Calm wind becoming south around 5 mph in the afternoon.

    High: 96 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 76. Light and variable wind.

    Low: 76 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 96.

    High: 96 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 77.

    Low: 77 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 97.

    High: 97 °F

    Hot

  • Monday Night

    Monday Night: A 20 percent chance of showers after 1am. Mostly clear, with a low around 77.

    Low: 77 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 70. Calm wind becoming east around 5 mph in the evening.
Friday
Sunny, with a high near 93. Heat index values as high as 100. Southeast wind around 5 mph becoming light and variable.
Friday Night
Mostly clear, with a low around 75. East wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 96. Heat index values as high as 106. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
Clear, with a low around 76. Light and variable wind.
Sunday
Sunny, with a high near 96.
Sunday Night
Mostly clear, with a low around 77.
Monday
Sunny and hot, with a high near 97.
Monday Night
A 20 percent chance of showers after 1am. Mostly clear, with a low around 77.
Tuesday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 95. Chance of precipitation is 20%.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Wednesday Night
Mostly clear, with a low around 69.
Thursday
Mostly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Batchtown IL
 38.99°N 90.67°W (Elev. 554 ft)
Last Update:
8:01 pm CDT Aug 14, 2025
Forecast Valid:
8pm CDT Aug 14, 2025-6pm CDT Aug 21, 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