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

21°F

-6°C

Humidity 65%
Wind Speed NE 13 mph
Barometer 30.30 in (1026.4 mb)
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Wind Chill8°F (-13°C)
Last update 29 Jan 4:54 pm CST
Extended Forecast for

4 Miles SSW Hardin IL

  • This Afternoon

    This Afternoon: A 40 percent chance of snow. Cloudy and cold, with a high near 20. Northeast wind around 8 mph.

    High: 20 °F

    Chance Snow

  • Tonight

    Tonight: A 30 percent chance of snow, mainly before 8pm. Mostly cloudy, with a low around 5. North wind 5 to 7 mph.

    Low: 5 °F

    Chance Snow
    then Mostly
    Cloudy

  • Friday

    Friday: Partly sunny and cold, with a high near 16. North wind 6 to 9 mph.

    High: 16 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 3. North wind 9 to 11 mph, with gusts as high as 22 mph.

    Low: 3 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Mostly sunny and cold, with a high near 19. Northwest wind 5 to 11 mph, with gusts as high as 22 mph.

    High: 19 °F

    Cold

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 3.

    Low: 3 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 28.

    High: 28 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 18.

    Low: 18 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 32.

    High: 32 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A 40 percent chance of snow. Cloudy and cold, with a high near 20. Northeast wind around 8 mph.
Tonight
A 30 percent chance of snow, mainly before 8pm. Mostly cloudy, with a low around 5. North wind 5 to 7 mph.
Friday
Partly sunny and cold, with a high near 16. North wind 6 to 9 mph.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 3. North wind 9 to 11 mph, with gusts as high as 22 mph.
Saturday
Mostly sunny and cold, with a high near 19. Northwest wind 5 to 11 mph, with gusts as high as 22 mph.
Saturday Night
Mostly clear, with a low around 3.
Sunday
Partly sunny, with a high near 28.
Sunday Night
Mostly cloudy, with a low around 18.
Monday
Partly sunny, with a high near 32.
Monday Night
Mostly cloudy, with a low around 18.
Tuesday
A 20 percent chance of snow. Mostly cloudy, with a high near 33.
Tuesday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 23.
Wednesday
A 20 percent chance of snow. Mostly cloudy, with a high near 32.
Wednesday Night
Mostly cloudy, with a low around 21.
Thursday
Partly sunny, with a high near 33.
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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:
4:46 pm CST Jan 29, 2026
Forecast Valid:
5pm CST Jan 29, 2026-6pm CST Feb 5, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation