Hazardous Weather Conditions

Current conditions at

St. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Overcast

70°F

21°C

Humidity 79%
Wind Speed S 9 mph
Barometer 29.63 in (1002.9 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 11 Mar 2:54 am CDT
Extended Forecast for

3 Miles WNW Hardin IL

  • Overnight

    Overnight: Rain and possibly a thunderstorm.  Steady temperature around 64. Southwest wind around 10 mph, with gusts as high as 21 mph.  Chance of precipitation is 80%.

    Low: 64 °F

    T-storms

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm before 2pm, then a slight chance of rain between 2pm and 3pm.  Temperature falling to around 46 by 3pm. Southwest wind 8 to 18 mph becoming northwest in the morning. Winds could gust as high as 30 mph.  Chance of precipitation is 90%.

    High: 60 °F

    T-storms then
    Chance Rain

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming clear, with a low around 29. Northwest wind 8 to 13 mph becoming light  after midnight. Winds could gust as high as 26 mph.

    Low: 29 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Sunny, with a high near 55. Calm wind becoming southwest 5 to 9 mph in the morning. Winds could gust as high as 21 mph.

    High: 55 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 43. South wind 9 to 17 mph, with gusts as high as 33 mph.

    Low: 43 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

  • Friday Night

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

    Low: 36 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 63.

    High: 63 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 20 percent chance of rain and thunderstorms after 1am.  Mostly cloudy, with a low around 50.

    Low: 50 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

Detailed Forecast

Overnight
Rain and possibly a thunderstorm. Steady temperature around 64. Southwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
Wednesday
Rain and possibly a thunderstorm before 2pm, then a slight chance of rain between 2pm and 3pm. Temperature falling to around 46 by 3pm. Southwest wind 8 to 18 mph becoming northwest in the morning. Winds could gust as high as 30 mph. Chance of precipitation is 90%.
Wednesday Night
Mostly cloudy, then gradually becoming clear, with a low around 29. Northwest wind 8 to 13 mph becoming light after midnight. Winds could gust as high as 26 mph.
Thursday
Sunny, with a high near 55. Calm wind becoming southwest 5 to 9 mph in the morning. Winds could gust as high as 21 mph.
Thursday Night
Partly cloudy, with a low around 43. South wind 9 to 17 mph, with gusts as high as 33 mph.
Friday
Partly sunny, with a high near 60.
Friday Night
Mostly cloudy, with a low around 36.
Saturday
Mostly cloudy, with a high near 63.
Saturday Night
A 20 percent chance of rain and thunderstorms after 1am. Mostly cloudy, with a low around 50.
Sunday
Rain and possibly a thunderstorm. High near 64. Breezy. Chance of precipitation is 80%.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 23. Blustery. Chance of precipitation is 30%.
Monday
Sunny, with a high near 38.
Monday Night
Partly cloudy, with a low around 19.
Tuesday
Partly sunny, with a high near 43.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Hardin IL
 39.16°N 90.69°W (Elev. 430 ft)
3:01 am CDT Mar 11, 2026
5am CDT Mar 11, 2026-6pm CDT Mar 17, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database