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.

Fog/Mist

54°F

12°C

Humidity 97%
Wind Speed E 7 mph
Barometer 29.84 in (1010.2 mb)
Dewpoint 53°F (12°C)
Visibility 4.00 mi
Wind Chill52°F (11°C)
Last update 10 Mar 6:54 am CDT
Extended Forecast for

3 Miles SE Hardin IL

  • Today

    Today: Sunny, with a high near 85. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 85 °F

    Sunny

  • Tonight

    Tonight: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4am. Low around 51. Southwest wind 13 to 16 mph, with gusts as high as 31 mph. Chance of precipitation is 90%.

    Low: 51 °F

    Chance
    T-storms then
    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm before 1pm, then a chance of showers. Temperature falling to around 48 by 5pm. Breezy, with a southwest wind 11 to 20 mph becoming northwest in the morning. Winds could gust as high as 31 mph. Chance of precipitation is 100%.

    High: 62 °F⇓

    Showers and
    Breezy then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 32. Northwest wind 5 to 14 mph, with gusts as high as 25 mph.

    Low: 32 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 56. Light and variable wind becoming southwest 5 to 10 mph in the morning.

    High: 56 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 62.

    High: 62 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 69.

    High: 69 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 85. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 28 mph.
Tonight
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4am. Low around 51. Southwest wind 13 to 16 mph, with gusts as high as 31 mph. Chance of precipitation is 90%.
Wednesday
Showers and possibly a thunderstorm before 1pm, then a chance of showers. Temperature falling to around 48 by 5pm. Breezy, with a southwest wind 11 to 20 mph becoming northwest in the morning. Winds could gust as high as 31 mph. Chance of precipitation is 100%.
Wednesday Night
Partly cloudy, with a low around 32. Northwest wind 5 to 14 mph, with gusts as high as 25 mph.
Thursday
Sunny, with a high near 56. Light and variable wind becoming southwest 5 to 10 mph in the morning.
Thursday Night
Mostly cloudy, with a low around 45.
Friday
Mostly cloudy, with a high near 62.
Friday Night
Mostly cloudy, with a low around 39.
Saturday
Partly sunny, with a high near 69.
Saturday Night
A 20 percent chance of rain after 1am. Partly cloudy, with a low around 46.
Sunday
Rain likely. Cloudy, with a high near 60. Breezy. Chance of precipitation is 70%.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 22. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 37.
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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:
5:31 am CDT Mar 10, 2026
Forecast Valid:
7am CDT Mar 10, 2026-6pm CDT Mar 16, 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