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

64°F

18°C

Humidity 27%
Wind Speed S 10 G 23 mph
Barometer 30.16 in (1021.2 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 29 Mar 12:54 pm CDT
Extended Forecast for

4 Miles SSW Hardin IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 68. South wind 7 to 13 mph, with gusts as high as 22 mph.

    High: 68 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 58. South wind 8 to 11 mph, with gusts as high as 22 mph.

    Low: 58 °F

    Mostly Cloudy

  • Monday

    Monday: Sunny, with a high near 83. Southwest wind 10 to 15 mph, with gusts as high as 28 mph.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 64. South wind 11 to 14 mph, with gusts as high as 28 mph.

    Low: 64 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 50 percent chance of rain and thunderstorms. Partly sunny, with a high near 83. Southwest wind 14 to 16 mph, with gusts as high as 31 mph.

    High: 83 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm. Low around 53. Chance of precipitation is 90%.

    Low: 53 °F

    Rain

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm. High near 62. Chance of precipitation is 80%.

    High: 62 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain and possibly a thunderstorm. Low around 49. Chance of precipitation is 90%.

    Low: 49 °F

    Rain

  • Thursday

    Thursday: Rain. High near 62. Chance of precipitation is 80%.

    High: 62 °F

    Rain

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 68. South wind 7 to 13 mph, with gusts as high as 22 mph.
Tonight
Mostly cloudy, with a low around 58. South wind 8 to 11 mph, with gusts as high as 22 mph.
Monday
Sunny, with a high near 83. Southwest wind 10 to 15 mph, with gusts as high as 28 mph.
Monday Night
Partly cloudy, with a low around 64. South wind 11 to 14 mph, with gusts as high as 28 mph.
Tuesday
A 50 percent chance of rain and thunderstorms. Partly sunny, with a high near 83. Southwest wind 14 to 16 mph, with gusts as high as 31 mph.
Tuesday Night
Rain and possibly a thunderstorm. Low around 53. Chance of precipitation is 90%.
Wednesday
Rain and possibly a thunderstorm. High near 62. Chance of precipitation is 80%.
Wednesday Night
Rain and possibly a thunderstorm. Low around 49. Chance of precipitation is 90%.
Thursday
Rain. High near 62. Chance of precipitation is 80%.
Thursday Night
Rain likely, mainly before 1am. Mostly cloudy, with a low around 47. Chance of precipitation is 60%.
Friday
A 40 percent chance of rain. Mostly cloudy, with a high near 71.
Friday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 56.
Saturday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 69. Chance of precipitation is 70%.
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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:
1:26 pm CDT Mar 29, 2026
Forecast Valid:
1pm CDT Mar 29, 2026-6pm CDT Apr 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