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.

Overcast

41°F

5°C

Humidity 62%
Wind Speed NW 20 G 25 mph
Barometer 30.15 in (1021.2 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 10 Jan 7:54 pm CST
Extended Forecast for

3 Miles SE Hardin IL

  • Tonight

    Tonight: A slight chance of rain before midnight, then a chance of flurries between midnight and 4am. Mostly cloudy during the early evening, then becoming mostly clear, with a low around 26. Blustery, with a northwest wind 11 to 20 mph, with gusts as high as 36 mph. Chance of precipitation is 20%.

    Low: 26 °F

    Slight Chance
    Rain then
    Chance
    Flurries and
    Blustery

  • Sunday

    Sunday: Sunny, with a high near 38. Northwest wind 6 to 15 mph, with gusts as high as 28 mph.

    High: 38 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 27. Southwest wind 3 to 7 mph.

    Low: 27 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 50. West wind 5 to 8 mph.

    High: 50 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 36. Southwest wind 3 to 8 mph.

    Low: 36 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 57.

    High: 57 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 43.

    High: 43 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 20.

    Low: 20 °F

    Partly Cloudy

Detailed Forecast

Tonight
A slight chance of rain before midnight, then a chance of flurries between midnight and 4am. Mostly cloudy during the early evening, then becoming mostly clear, with a low around 26. Blustery, with a northwest wind 11 to 20 mph, with gusts as high as 36 mph. Chance of precipitation is 20%.
Sunday
Sunny, with a high near 38. Northwest wind 6 to 15 mph, with gusts as high as 28 mph.
Sunday Night
Clear, with a low around 27. Southwest wind 3 to 7 mph.
Monday
Sunny, with a high near 50. West wind 5 to 8 mph.
Monday Night
Partly cloudy, with a low around 36. Southwest wind 3 to 8 mph.
Tuesday
Partly sunny, with a high near 57.
Tuesday Night
Mostly cloudy, with a low around 36.
Wednesday
Mostly cloudy, with a high near 43.
Wednesday Night
Partly cloudy, with a low around 20.
Thursday
Mostly sunny, with a high near 38.
Thursday Night
Partly cloudy, with a low around 30.
Friday
Partly sunny, with a high near 43.
Friday Night
Partly cloudy, with a low around 23.
Saturday
Partly sunny, with a high near 33.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Hardin IL
 39.12°N 90.58°W (Elev. 430 ft)
Last Update:
8:16 pm CST Jan 10, 2026
Forecast Valid:
8pm CST Jan 10, 2026-6pm CST Jan 17, 2026
 
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