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

78°F

26°C

Humidity 45%
Wind Speed S 12 mph
Barometer 29.88 in (1011.6 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 14 Nov 3:54 pm CST
Extended Forecast for

3 Miles E Elsah IL

  • Tonight

    Tonight: Increasing clouds, with a low around 59. South wind 7 to 9 mph.

    Low: 59 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 78. Southwest wind 8 to 15 mph becoming west in the afternoon. Winds could gust as high as 23 mph.

    High: 78 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 43. North wind 6 to 10 mph.

    Low: 43 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 59. North wind around 6 mph.

    High: 59 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 37. Light and variable wind.

    Low: 37 °F

    Mostly Clear

  • Monday

    Monday: A 40 percent chance of rain after noon. Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny
    then Chance
    Rain

  • Monday Night

    Monday Night: Rain likely, mainly before midnight. Mostly cloudy, with a low around 45. Chance of precipitation is 60%.

    Low: 45 °F

    Rain Likely

  • Tuesday

    Tuesday: A 20 percent chance of rain before noon. Partly sunny, with a high near 59.

    High: 59 °F

    Slight Chance
    Rain then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 59. South wind 7 to 9 mph.
Saturday
Mostly sunny, with a high near 78. Southwest wind 8 to 15 mph becoming west in the afternoon. Winds could gust as high as 23 mph.
Saturday Night
Mostly clear, with a low around 43. North wind 6 to 10 mph.
Sunday
Sunny, with a high near 59. North wind around 6 mph.
Sunday Night
Mostly clear, with a low around 37. Light and variable wind.
Monday
A 40 percent chance of rain after noon. Mostly sunny, with a high near 58.
Monday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 45. Chance of precipitation is 60%.
Tuesday
A 20 percent chance of rain before noon. Partly sunny, with a high near 59.
Tuesday Night
Mostly cloudy, with a low around 38.
Wednesday
A 20 percent chance of rain. Partly sunny, with a high near 58.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 45.
Thursday
Rain likely. Mostly cloudy, with a high near 63. Chance of precipitation is 60%.
Thursday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 44.
Friday
A 40 percent chance of rain. Partly sunny, with a high near 59.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles E Elsah IL
 38.95°N 90.3°W (Elev. 449 ft)
Last Update:
3:16 pm CST Nov 14, 2025
Forecast Valid:
4pm CST Nov 14, 2025-6pm CST Nov 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