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

55°F

13°C

Humidity 96%
Wind Speed SE 5 mph
Barometer 29.84 in (1010.2 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Wind Chill54°F (12°C)
Last update 10 Mar 4:54 am CDT
Extended Forecast for

4 Miles SSW Hardin IL

  • Today

    Today: Sunny, with a high near 83. South wind 7 to 17 mph, with gusts as high as 28 mph.

    High: 83 °F

    Sunny

  • Tonight

    Tonight: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4am. Low around 49. South wind 13 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.

    Low: 49 °F

    Chance
    T-storms then
    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm before 10am, then showers likely. Temperature falling to around 47 by 5pm. Breezy, with a southwest wind 10 to 20 mph becoming northwest in the morning. Winds could gust as high as 32 mph. Chance of precipitation is 100%.

    High: 62 °F⇓

    Showers and
    Breezy then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 32. Northwest wind 6 to 15 mph, with gusts as high as 26 mph.

    Low: 32 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 54. Light and variable wind becoming southwest 5 to 9 mph in the morning. Winds could gust as high as 20 mph.

    High: 54 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 60.

    High: 60 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 67.

    High: 67 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 83. South wind 7 to 17 mph, with gusts as high as 28 mph.
Tonight
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4am. Low around 49. South wind 13 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
Wednesday
Showers and possibly a thunderstorm before 10am, then showers likely. Temperature falling to around 47 by 5pm. Breezy, with a southwest wind 10 to 20 mph becoming northwest in the morning. Winds could gust as high as 32 mph. Chance of precipitation is 100%.
Wednesday Night
Partly cloudy, with a low around 32. Northwest wind 6 to 15 mph, with gusts as high as 26 mph.
Thursday
Sunny, with a high near 54. Light and variable wind becoming southwest 5 to 9 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 45.
Friday
Mostly cloudy, with a high near 60.
Friday Night
Mostly cloudy, with a low around 39.
Saturday
Partly sunny, with a high near 67.
Saturday Night
A 20 percent chance of rain after 1am. Partly cloudy, with a low around 46.
Sunday
Rain likely. Cloudy, with a high near 59. Chance of precipitation is 70%.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 22. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 35.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Hardin IL
 39.1°N 90.64°W (Elev. 758 ft)
Last Update:
3:46 am CDT Mar 10, 2026
Forecast Valid:
5am CDT Mar 10, 2026-6pm CDT Mar 16, 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