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

25°F

-4°C

Humidity 72%
Wind Speed NW 7 mph
Barometer 30.45 in (1031.5 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill17°F (-8°C)
Last update 28 Nov 1:54 am CST
Extended Forecast for

5 Miles WSW Hardin IL

Winter Weather Advisory November 29, 12:00am until November 30, 12:00am
Click here for hazard details and duration
Winter Weather Advisory

  • Overnight

    Overnight: Mostly clear, with a low around 22. Calm wind becoming northwest around 5 mph.

    Low: 22 °F

    Mostly Clear

  • Friday

    Friday: Increasing clouds, with a high near 36. Light and variable wind.

    High: 36 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Snow, mainly after 2am. Low around 32. Southeast wind 5 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    Low: 32 °F

    Slight Chance
    Snow then
    Snow

  • Saturday

    Saturday: Rain and snow, possibly mixed with sleet before 11am, then rain, possibly mixed with snow between 11am and noon, then rain after noon. High near 40. Southeast wind 10 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 1 to 2 inches possible.

    High: 40 °F

    Wintry Mix
    then Rain

  • Saturday Night

    Saturday Night: Rain likely, mixing with snow after 9pm, then gradually ending. Cloudy, with a low around 24. South wind 9 to 14 mph becoming northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 24 °F

    Rain/Snow
    Likely then
    Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 28.

    High: 28 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 16.

    Low: 16 °F

    Mostly Cloudy

  • Monday

    Monday: A 30 percent chance of snow after noon. Mostly cloudy, with a high near 26.

    High: 26 °F

    Cloudy then
    Chance Snow

  • Monday Night

    Monday Night: A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 17.

    Low: 17 °F

    Chance Snow

Detailed Forecast

Overnight
Mostly clear, with a low around 22. Calm wind becoming northwest around 5 mph.
Friday
Increasing clouds, with a high near 36. Light and variable wind.
Friday Night
Snow, mainly after 2am. Low around 32. Southeast wind 5 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Saturday
Rain and snow, possibly mixed with sleet before 11am, then rain, possibly mixed with snow between 11am and noon, then rain after noon. High near 40. Southeast wind 10 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 1 to 2 inches possible.
Saturday Night
Rain likely, mixing with snow after 9pm, then gradually ending. Cloudy, with a low around 24. South wind 9 to 14 mph becoming northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Sunday
Mostly cloudy, with a high near 28.
Sunday Night
Mostly cloudy, with a low around 16.
Monday
A 30 percent chance of snow after noon. Mostly cloudy, with a high near 26.
Monday Night
A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 17.
Tuesday
Partly sunny, with a high near 30.
Tuesday Night
Partly cloudy, with a low around 20.
Wednesday
Partly sunny, with a high near 38.
Wednesday Night
Mostly cloudy, with a low around 21.
Thursday
Partly sunny, with a high near 30.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Hardin IL
 39.12°N 90.69°W (Elev. 430 ft)
Last Update:
2:26 am CST Nov 28, 2025
Forecast Valid:
2am CST Nov 28, 2025-6pm CST Dec 4, 2025
 
Forecast Discussion
 
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Additional Resources

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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