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 86%
Wind Speed N 7 mph
Barometer 29.96 in (1014.5 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 18 Nov 6:54 pm CST
Extended Forecast for

4 Miles SSW Hardin IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 44. North wind 3 to 6 mph.

    Low: 44 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Cloudy, with a high near 56. North wind around 5 mph becoming calm in the morning.

    High: 56 °F

    Cloudy

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 48. Calm wind becoming southeast around 5 mph after midnight.

    Low: 48 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: Rain likely, mainly before noon. Cloudy, with a high near 60. South wind 3 to 6 mph. Chance of precipitation is 60%.

    High: 60 °F

    Rain Likely

  • Thursday Night

    Thursday Night: Rain likely, mainly after midnight. Cloudy, with a low around 51. Calm wind becoming northeast around 6 mph after midnight. Chance of precipitation is 60%.

    Low: 51 °F

    Rain Likely

  • Friday

    Friday: Rain. High near 56. Chance of precipitation is 80%.

    High: 56 °F

    Rain

  • Friday Night

    Friday Night: A 40 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 45.

    Low: 45 °F

    Chance Rain

  • Saturday

    Saturday: Mostly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 44. North wind 3 to 6 mph.
Wednesday
Cloudy, with a high near 56. North wind around 5 mph becoming calm in the morning.
Wednesday Night
A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 48. Calm wind becoming southeast around 5 mph after midnight.
Thursday
Rain likely, mainly before noon. Cloudy, with a high near 60. South wind 3 to 6 mph. Chance of precipitation is 60%.
Thursday Night
Rain likely, mainly after midnight. Cloudy, with a low around 51. Calm wind becoming northeast around 6 mph after midnight. Chance of precipitation is 60%.
Friday
Rain. High near 56. Chance of precipitation is 80%.
Friday Night
A 40 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 45.
Saturday
Mostly sunny, with a high near 57.
Saturday Night
Mostly clear, with a low around 41.
Sunday
Sunny, with a high near 60.
Sunday Night
Partly cloudy, with a low around 43.
Monday
A 30 percent chance of rain. Partly sunny, with a high near 59.
Monday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 44.
Tuesday
A 40 percent chance of rain. Mostly cloudy, with a high near 55.
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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:
7:41 pm CST Nov 18, 2025
Forecast Valid:
7pm CST Nov 18, 2025-6pm CST Nov 25, 2025
 
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