National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Overcast

61°F

16°C

Humidity 72%
Wind Speed NE 3 mph
Barometer 30.07 in (1018.1 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 28 Sep 5:54 am CDT
Extended Forecast for

2 Miles N Hardin IL

  • Today

    Today: Sunny, with a high near 77. Calm wind becoming northeast around 5 mph.

    High: 77 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 53. Light and variable wind.

    Low: 53 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 82. South wind 3 to 8 mph.

    High: 82 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 63. South wind 3 to 6 mph.

    Low: 63 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 88. South wind 6 to 9 mph.

    High: 88 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 69.

    Low: 69 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: Showers likely, with thunderstorms also possible after 1pm. Cloudy, with a high near 80. Chance of precipitation is 70%.

    High: 80 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.

    Low: 61 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers and thunderstorms. Partly sunny, with a high near 71. Chance of precipitation is 40%.

    High: 71 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 77. Calm wind becoming northeast around 5 mph.
Tonight
Clear, with a low around 53. Light and variable wind.
Tuesday
Sunny, with a high near 82. South wind 3 to 8 mph.
Tuesday Night
Partly cloudy, with a low around 63. South wind 3 to 6 mph.
Wednesday
Partly sunny, with a high near 88. South wind 6 to 9 mph.
Wednesday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 69.
Thursday
Showers likely, with thunderstorms also possible after 1pm. Cloudy, with a high near 80. Chance of precipitation is 70%.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 71. Chance of precipitation is 40%.
Friday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 57.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 72.
Saturday Night
A 30 percent chance of showers. Partly cloudy, with a low around 58.
Sunday
A 20 percent chance of showers. Mostly sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Hardin IL
 39.18°N 90.61°W (Elev. 420 ft)
Last Update:
4:16 am CDT Sep 28, 2026
Forecast Valid:
5am CDT Sep 28, 2026-6pm CDT Oct 4, 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