Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

66°F

19°C

Humidity 37%
Wind Speed S 13 mph
Barometer 30.01 in (1016.1 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 16 Feb 12:54 pm CST
Extended Forecast for

4 Miles SSW Hardin IL

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 64. South wind 8 to 10 mph, with gusts as high as 22 mph.

    High: 64 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 44. South wind around 8 mph.

    Low: 44 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 62. South wind 7 to 14 mph, with gusts as high as 25 mph.

    High: 62 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain after midnight.  Mostly cloudy, then gradually becoming mostly clear, with a low around 55. South wind 15 to 18 mph, with gusts as high as 31 mph.

    Low: 55 °F

    Mostly Cloudy
    then Chance
    Rain

  • Wednesday

    Wednesday: Sunny, with a high near 68. West wind 7 to 14 mph, with gusts as high as 24 mph.

    High: 68 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

  • Thursday

    Thursday: A 40 percent chance of rain.  Mostly sunny, with a high near 70.

    High: 70 °F

    Chance Rain

  • Thursday Night

    Thursday Night: A 20 percent chance of rain.  Partly cloudy, with a low around 39.

    Low: 39 °F

    Slight Chance
    Rain

  • Friday

    Friday: A 20 percent chance of rain.  Mostly cloudy, with a high near 53.

    High: 53 °F

    Slight Chance
    Rain

Detailed Forecast

Washington's Birthday
Mostly sunny, with a high near 64. South wind 8 to 10 mph, with gusts as high as 22 mph.
Tonight
Mostly cloudy, with a low around 44. South wind around 8 mph.
Tuesday
Mostly cloudy, with a high near 62. South wind 7 to 14 mph, with gusts as high as 25 mph.
Tuesday Night
A 30 percent chance of rain after midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 55. South wind 15 to 18 mph, with gusts as high as 31 mph.
Wednesday
Sunny, with a high near 68. West wind 7 to 14 mph, with gusts as high as 24 mph.
Wednesday Night
Partly cloudy, with a low around 46.
Thursday
A 40 percent chance of rain. Mostly sunny, with a high near 70.
Thursday Night
A 20 percent chance of rain. Partly cloudy, with a low around 39.
Friday
A 20 percent chance of rain. Mostly cloudy, with a high near 53.
Friday Night
A 20 percent chance of snow. Low around 35.
Saturday
High near 49.
Saturday Night
Low around 32.
Sunday
High near 48.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Hardin IL
 39.1°N 90.64°W (Elev. 758 ft)
12:26 pm CST Feb 16, 2026
1pm CST Feb 16, 2026-6pm CST Feb 22, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database