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

26°F

-3°C

Humidity 71%
Wind Speed S 6 mph
Barometer 30.46 in (1032.0 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 11 Jan 7:54 pm CST
Extended Forecast for

3 Miles SSW Batchtown IL

  • Tonight

    Tonight: Clear, with a low around 26. Calm wind becoming south around 6 mph in the evening.

    Low: 26 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 51. West wind 6 to 9 mph.

    High: 51 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 36. Southwest wind 5 to 8 mph.

    Low: 36 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 59. West wind 9 to 14 mph, with gusts as high as 25 mph.

    High: 59 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 38. West wind 8 to 11 mph, with gusts as high as 20 mph.

    Low: 38 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 42. Breezy.

    High: 42 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 18.

    Low: 18 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 33.

    High: 33 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 26. Calm wind becoming south around 6 mph in the evening.
Monday
Sunny, with a high near 51. West wind 6 to 9 mph.
Monday Night
Mostly clear, with a low around 36. Southwest wind 5 to 8 mph.
Tuesday
Increasing clouds, with a high near 59. West wind 9 to 14 mph, with gusts as high as 25 mph.
Tuesday Night
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 38. West wind 8 to 11 mph, with gusts as high as 20 mph.
Wednesday
Mostly cloudy, with a high near 42. Breezy.
Wednesday Night
Partly cloudy, with a low around 18.
Thursday
Mostly sunny, with a high near 33.
Thursday Night
Mostly cloudy, with a low around 28.
Friday
Partly sunny, with a high near 42.
Friday Night
Mostly cloudy, with a low around 22.
Saturday
Mostly cloudy, with a high near 32.
Saturday Night
Partly cloudy, with a low around 15.
Sunday
Mostly sunny, with a high near 32.
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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:
7:47 pm CST Jan 11, 2026
Forecast Valid:
8pm CST Jan 11, 2026-6pm CST Jan 18, 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