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

52°F

11°C

Humidity 34%
Wind Speed S 10 mph
Barometer 30.03 in (1017.0 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill49°F (9°C)
Last update 12 Mar 5:54 pm CDT
Extended Forecast for

3 Miles W Hardin IL

Wind Advisory March 12, 10:00pm until March 13, 11:00am
Click here for hazard details and duration
Wind Advisory

  • Tonight

    Tonight: Partly cloudy, with a low around 44. Breezy, with a south wind 10 to 15 mph increasing to 16 to 21 mph after midnight. Winds could gust as high as 38 mph.

    Low: 44 °F

    Mostly Cloudy
    then Partly
    Cloudy and
    Breezy

  • Friday

    Friday: Mostly sunny, with a high near 57. West wind 10 to 14 mph, with gusts as high as 29 mph.

    High: 57 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 35. Northwest wind around 5 mph becoming calm in the evening.

    Low: 35 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 63. Southeast wind 6 to 10 mph, with gusts as high as 21 mph.

    High: 63 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 53. Southeast wind 8 to 10 mph, with gusts as high as 23 mph.

    Low: 53 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Sunday

    Sunday: Rain and possibly a thunderstorm. High near 66. Chance of precipitation is 90%.

    High: 66 °F

    Rain

  • Sunday Night

    Sunday Night: Rain and snow before 1am, then a chance of snow. Low around 19. Blustery. Chance of precipitation is 80%.

    Low: 19 °F

    Rain/Snow and
    Blustery

  • Monday

    Monday: A 20 percent chance of snow before 1pm. Partly sunny, with a high near 27. Blustery.

    High: 27 °F

    Slight Chance
    Snow and
    Blustery

  • Monday Night

    Monday Night: Mostly clear, with a low around 11.

    Low: 11 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 44. Breezy, with a south wind 10 to 15 mph increasing to 16 to 21 mph after midnight. Winds could gust as high as 38 mph.
Friday
Mostly sunny, with a high near 57. West wind 10 to 14 mph, with gusts as high as 29 mph.
Friday Night
Partly cloudy, with a low around 35. Northwest wind around 5 mph becoming calm in the evening.
Saturday
Partly sunny, with a high near 63. Southeast wind 6 to 10 mph, with gusts as high as 21 mph.
Saturday Night
A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 53. Southeast wind 8 to 10 mph, with gusts as high as 23 mph.
Sunday
Rain and possibly a thunderstorm. High near 66. Chance of precipitation is 90%.
Sunday Night
Rain and snow before 1am, then a chance of snow. Low around 19. Blustery. Chance of precipitation is 80%.
Monday
A 20 percent chance of snow before 1pm. Partly sunny, with a high near 27. Blustery.
Monday Night
Mostly clear, with a low around 11.
Tuesday
Mostly sunny, with a high near 33.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.
Wednesday
Partly sunny, with a high near 54.
Wednesday Night
Partly cloudy, with a low around 36.
Thursday
Sunny, with a high near 65.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Hardin IL
 39.14°N 90.66°W (Elev. 604 ft)
Last Update:
5:41 pm CDT Mar 12, 2026
Forecast Valid:
6pm CDT Mar 12, 2026-6pm CDT Mar 19, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation