Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Overcast

37°F

3°C

Humidity 82%
Wind Speed SE 10 mph
Barometer 29.91 in (1012.9 mb)
Dewpoint 32°F (0°C)
Visibility 9.00 mi
Wind Chill30°F (-1°C)
Last update 6 Dec 11:54 pm CST
Extended Forecast for

4 Miles WSW Hardin IL

  • Overnight

    Overnight: A 30 percent chance of rain, mainly before 1am.  Cloudy, with a low around 34. South wind 5 to 7 mph.

    Low: 34 °F

    Chance Rain

  • Sunday

    Sunday: A slight chance of drizzle before 11am.  Cloudy, with a temperature falling to around 30 by 5pm. Light and variable wind becoming north 9 to 14 mph in the morning. Winds could gust as high as 22 mph.

    High: 36 °F

    Slight Chance
    Drizzle then
    Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 16. North wind 5 to 11 mph, with gusts as high as 20 mph.

    Low: 16 °F

    Mostly Cloudy

  • Monday

    Monday: Cloudy through mid morning, then gradual clearing, with a high near 31. North wind around 5 mph becoming calm  in the morning.

    High: 31 °F

    Gradual
    Clearing

  • Monday Night

    Monday Night: Partly cloudy, with a low around 23. Southwest wind 3 to 8 mph.

    Low: 23 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 49.

    High: 49 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 44.

    High: 44 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow after midnight.  Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy
    then Slight
    Chance Snow

Detailed Forecast

Overnight
A 30 percent chance of rain, mainly before 1am. Cloudy, with a low around 34. South wind 5 to 7 mph.
Sunday
A slight chance of drizzle before 11am. Cloudy, with a temperature falling to around 30 by 5pm. Light and variable wind becoming north 9 to 14 mph in the morning. Winds could gust as high as 22 mph.
Sunday Night
Mostly cloudy, with a low around 16. North wind 5 to 11 mph, with gusts as high as 20 mph.
Monday
Cloudy through mid morning, then gradual clearing, with a high near 31. North wind around 5 mph becoming calm in the morning.
Monday Night
Partly cloudy, with a low around 23. Southwest wind 3 to 8 mph.
Tuesday
Partly sunny, with a high near 49.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
Partly sunny, with a high near 44.
Wednesday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 26.
Thursday
A 30 percent chance of snow, mainly before noon. Mostly cloudy, with a high near 36.
Thursday Night
Mostly cloudy, with a low around 17.
Friday
Partly sunny, with a high near 25.
Friday Night
Partly cloudy, with a low around 7.
Saturday
Mostly sunny, with a high near 21.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Hardin IL
 39.14°N 90.69°W (Elev. 430 ft)
9:46 pm CST Dec 6, 2025
12am CST Dec 7, 2025-6pm CST Dec 13, 2025
 
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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