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

60°F

16°C

Humidity 36%
Wind Speed W 14 mph
Barometer 30.30 in (1026.0 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Last update 6 Apr 1:54 pm CDT
Extended Forecast for

4 Miles SSW Hardin IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 60. Northwest wind around 7 mph.

    High: 60 °F

    Sunny

  • Tonight

    Tonight: A 30 percent chance of showers, mainly after 3am. Increasing clouds, with a low around 35. Northeast wind 6 to 10 mph.

    Low: 35 °F

    Partly Cloudy
    then Chance
    Showers

  • Tuesday

    Tuesday: A chance of rain and snow showers before 10am, then a chance of rain showers between 10am and 11am. Cloudy, then gradually becoming mostly sunny, with a high near 52. East wind 8 to 10 mph. Chance of precipitation is 30%.

    High: 52 °F

    Chance
    Rain/Snow
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 41. East wind around 10 mph, with gusts as high as 20 mph.

    Low: 41 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 71. Southeast wind around 11 mph, with gusts as high as 25 mph.

    High: 71 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 56. Chance of precipitation is 40%.

    Low: 56 °F

    Chance
    Showers

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 72.

    High: 72 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 60. Northwest wind around 7 mph.
Tonight
A 30 percent chance of showers, mainly after 3am. Increasing clouds, with a low around 35. Northeast wind 6 to 10 mph.
Tuesday
A chance of rain and snow showers before 10am, then a chance of rain showers between 10am and 11am. Cloudy, then gradually becoming mostly sunny, with a high near 52. East wind 8 to 10 mph. Chance of precipitation is 30%.
Tuesday Night
Partly cloudy, with a low around 41. East wind around 10 mph, with gusts as high as 20 mph.
Wednesday
Partly sunny, with a high near 71. Southeast wind around 11 mph, with gusts as high as 25 mph.
Wednesday Night
Partly cloudy, with a low around 53.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 74.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 56. Chance of precipitation is 40%.
Friday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 72.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 56.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 77.
Saturday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60.
Sunday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 80.
Basemap Options
Click map to change the forecast location
Loading map...
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:
1:26 pm CDT Apr 6, 2026
Forecast Valid:
2pm CDT Apr 6, 2026-6pm CDT Apr 12, 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