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

69°F

21°C

Humidity 90%
Wind Speed Calm
Barometer 30.00 in (1015.4 mb)
Dewpoint 66°F (19°C)
Visibility 9.00 mi
Last update 15 Jun 2:54 am CDT
Extended Forecast for

3 Miles SW Hardin IL

  • Overnight

    Overnight: Patchy fog. Otherwise, partly cloudy, with a low around 66. Calm wind.

    Low: 66 °F

    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 8am. Otherwise, partly sunny, with a high near 83. Northeast wind 3 to 6 mph.

    High: 83 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 68. Northeast wind around 5 mph becoming calm in the evening.

    Low: 68 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of showers between 10am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 84 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 69. Light southeast wind.

    Low: 69 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 90.

    High: 90 °F

    Sunny then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 72. Chance of precipitation is 60%.

    Low: 72 °F

    T-storms
    Likely

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 84. Chance of precipitation is 70%.

    High: 84 °F

    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 67.

    Low: 67 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Patchy fog. Otherwise, partly cloudy, with a low around 66. Calm wind.
Sunday
Patchy fog before 8am. Otherwise, partly sunny, with a high near 83. Northeast wind 3 to 6 mph.
Sunday Night
Mostly cloudy, with a low around 68. Northeast wind around 5 mph becoming calm in the evening.
Monday
A slight chance of showers between 10am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 69. Light southeast wind.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 90.
Tuesday Night
Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 72. Chance of precipitation is 60%.
Wednesday
Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 84. Chance of precipitation is 70%.
Wednesday Night
A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 67.
Juneteenth
Sunny, with a high near 85.
Thursday Night
Mostly clear, with a low around 68.
Friday
Sunny, with a high near 90.
Friday Night
Mostly clear, with a low around 74.
Saturday
Sunny, with a high near 92.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Hardin IL
 39.12°N 90.67°W (Elev. 525 ft)
Last Update:
3:06 am CDT Jun 15, 2025
Forecast Valid:
3am CDT Jun 15, 2025-6pm CDT Jun 21, 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