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

43°F

6°C

Humidity 56%
Wind Speed W 18 G 31 mph
Barometer 30.01 in (1016.3 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 25 Nov 11:54 pm CST
Extended Forecast for

Elsah IL

  • Overnight

    Overnight: Mostly clear, with a low around 34. Breezy, with a west wind 17 to 20 mph, with gusts as high as 40 mph.

    Low: 34 °F

    Mostly Clear
    and Breezy

  • Wednesday

    Wednesday: Partly sunny, then gradually becoming sunny, with a high near 45. Breezy, with a west wind 15 to 23 mph, with gusts as high as 36 mph.

    High: 45 °F

    Becoming
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 25. West wind 8 to 13 mph, with gusts as high as 22 mph.

    Low: 25 °F

    Increasing
    Clouds

  • Thanksgiving Day

    Thanksgiving Day: Sunny, with a high near 42. Northwest wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 42 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 22. Northwest wind 5 to 7 mph becoming calm after midnight.

    Low: 22 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 39.

    High: 39 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Rain and snow likely after midnight. Cloudy, with a low around 29. Chance of precipitation is 60%.

    Low: 29 °F

    Cloudy then
    Rain/Snow
    Likely

  • Saturday

    Saturday: Rain and snow. High near 40. Chance of precipitation is 80%.

    High: 40 °F

    Rain/Snow

  • Saturday Night

    Saturday Night: Rain likely, mainly before midnight. Cloudy, with a low around 26. Chance of precipitation is 60%.

    Low: 26 °F

    Rain Likely
    then Chance
    Rain

Detailed Forecast

Overnight
Mostly clear, with a low around 34. Breezy, with a west wind 17 to 20 mph, with gusts as high as 40 mph.
Wednesday
Partly sunny, then gradually becoming sunny, with a high near 45. Breezy, with a west wind 15 to 23 mph, with gusts as high as 36 mph.
Wednesday Night
Increasing clouds, with a low around 25. West wind 8 to 13 mph, with gusts as high as 22 mph.
Thanksgiving Day
Sunny, with a high near 42. Northwest wind 8 to 11 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 22. Northwest wind 5 to 7 mph becoming calm after midnight.
Friday
Mostly sunny, with a high near 39.
Friday Night
Rain and snow likely after midnight. Cloudy, with a low around 29. Chance of precipitation is 60%.
Saturday
Rain and snow. High near 40. Chance of precipitation is 80%.
Saturday Night
Rain likely, mainly before midnight. Cloudy, with a low around 26. Chance of precipitation is 60%.
Sunday
A slight chance of rain and snow. Mostly cloudy, with a high near 34. Chance of precipitation is 20%.
Sunday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 18. Chance of precipitation is 20%.
Monday
A slight chance of rain and snow. Mostly cloudy, with a high near 30. Chance of precipitation is 20%.
Monday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 18.
Tuesday
Partly sunny, with a high near 32.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Elsah IL
 38.93°N 90.36°W (Elev. 407 ft)
Last Update:
12:26 am CST Nov 26, 2025
Forecast Valid:
12am CST Nov 26, 2025-6pm CST Dec 2, 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