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.

Fair

74°F

23°C

Humidity 82%
Wind Speed W 7 mph
Barometer 29.64 in (1003.0 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 18 Jun 2:54 am CDT
Extended Forecast for

4 Miles SSE Eldred IL

  • Overnight

    Overnight: Mostly clear, with a low around 66. West wind around 6 mph.

    Low: 66 °F

    Mostly Clear

  • Thursday

    Thursday: A 30 percent chance of showers, mainly before 2pm. Increasing clouds, with a high near 74. Northwest wind 6 to 8 mph.

    High: 74 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Patchy fog after 4am. Otherwise, mostly clear, with a low around 57. Northwest wind around 5 mph becoming calm in the evening.

    Low: 57 °F

    Mostly Clear
    then Patchy
    Fog

  • Juneteenth

    Juneteenth: Patchy fog before 7am. Otherwise, mostly sunny, with a high near 82. Light northwest wind.

    High: 82 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 62. Calm wind.

    Low: 62 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy
    then Chance
    T-storms

  • Sunday

    Sunday: Showers and possibly a thunderstorm. High near 79. Chance of precipitation is 90%.

    High: 79 °F

    Showers

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm before 1am, then a slight chance of showers. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.

    Low: 59 °F

    Showers
    Likely

Detailed Forecast

Overnight
Mostly clear, with a low around 66. West wind around 6 mph.
Thursday
A 30 percent chance of showers, mainly before 2pm. Increasing clouds, with a high near 74. Northwest wind 6 to 8 mph.
Thursday Night
Patchy fog after 4am. Otherwise, mostly clear, with a low around 57. Northwest wind around 5 mph becoming calm in the evening.
Juneteenth
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 82. Light northwest wind.
Friday Night
Partly cloudy, with a low around 62. Calm wind.
Saturday
Mostly sunny, with a high near 83.
Saturday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 64.
Sunday
Showers and possibly a thunderstorm. High near 79. Chance of precipitation is 90%.
Sunday Night
Showers likely and possibly a thunderstorm before 1am, then a slight chance of showers. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.
Monday
Partly sunny, with a high near 76.
Monday Night
Partly cloudy, with a low around 57.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
Partly cloudy, with a low around 59.
Wednesday
Mostly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Eldred IL
 39.23°N 90.52°W (Elev. 699 ft)
Last Update:
1:26 am CDT Jun 18, 2026
Forecast Valid:
3am CDT Jun 18, 2026-6pm CDT Jun 24, 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