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

88°F

31°C

Humidity 52%
Wind Speed NW 3 mph
Barometer 30.21 in (1022.6 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 6 Aug 1:54 pm CDT
Extended Forecast for

3 Miles WSW Hardin IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 88. Light southeast wind.

    High: 88 °F

    Sunny

  • Tonight

    Tonight: A slight chance of showers between 11pm and midnight. Mostly clear, with a low around 71. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 71 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. Calm wind becoming south around 6 mph in the morning.

    High: 91 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 73. South wind around 6 mph.

    Low: 73 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 92. South wind 5 to 8 mph.

    High: 92 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 74.

    Low: 74 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 88. Light southeast wind.
Tonight
A slight chance of showers between 11pm and midnight. Mostly clear, with a low around 71. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. Calm wind becoming south around 6 mph in the morning.
Thursday Night
Partly cloudy, with a low around 73. South wind around 6 mph.
Friday
Sunny, with a high near 92. South wind 5 to 8 mph.
Friday Night
Mostly clear, with a low around 74.
Saturday
Sunny, with a high near 92.
Saturday Night
Partly cloudy, with a low around 74.
Sunday
Mostly sunny, with a high near 89.
Sunday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Hardin IL
 39.14°N 90.66°W (Elev. 604 ft)
Last Update:
2:31 pm CDT Aug 6, 2025
Forecast Valid:
2pm CDT Aug 6, 2025-6pm CDT Aug 12, 2025
 
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