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

41°F

5°C

Humidity 41%
Wind Speed W 12 mph
Barometer 30.22 in (1023.7 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 21 Feb 2:54 pm CST
Extended Forecast for

4 Miles SE Eldred IL

  • Tonight

    Tonight: Mostly clear, with a low around 18. Northwest wind 10 to 17 mph, with gusts as high as 26 mph.

    Low: 18 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 30. Blustery, with a northwest wind 17 to 20 mph, with gusts as high as 32 mph.

    High: 30 °F

    Mostly Sunny
    and Blustery

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 14. Northwest wind 15 to 17 mph, with gusts as high as 28 mph.

    Low: 14 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 33. Northwest wind 6 to 15 mph, with gusts as high as 24 mph.

    High: 33 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 18. Calm wind becoming south 5 to 8 mph after midnight.

    Low: 18 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 53.

    High: 53 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 55.

    High: 55 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 32.

    Low: 32 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly clear, with a low around 18. Northwest wind 10 to 17 mph, with gusts as high as 26 mph.
Sunday
Mostly sunny, with a high near 30. Blustery, with a northwest wind 17 to 20 mph, with gusts as high as 32 mph.
Sunday Night
Partly cloudy, with a low around 14. Northwest wind 15 to 17 mph, with gusts as high as 28 mph.
Monday
Sunny, with a high near 33. Northwest wind 6 to 15 mph, with gusts as high as 24 mph.
Monday Night
Partly cloudy, with a low around 18. Calm wind becoming south 5 to 8 mph after midnight.
Tuesday
Partly sunny, with a high near 53.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
Partly sunny, with a high near 55.
Wednesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 32.
Thursday
A 30 percent chance of rain, mainly before noon. Mostly sunny, with a high near 48.
Thursday Night
Mostly clear, with a low around 28.
Friday
Sunny, with a high near 59.
Friday Night
Mostly clear, with a low around 36.
Saturday
Mostly sunny, with a high near 58.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SE Eldred IL
 39.25°N 90.49°W (Elev. 656 ft)
Last Update:
12:26 pm CST Feb 21, 2026
Forecast Valid:
3pm CST Feb 21, 2026-6pm CST Feb 28, 2026
 
Forecast Discussion
 
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Additional Resources

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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