Current conditions at

St. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Partly Cloudy

17°F

-8°C

Humidity 62%
Wind Speed N 12 mph
Barometer 30.19 in (1023.0 mb)
Dewpoint 6°F (-14°C)
Visibility 10.00 mi
Wind Chill4°F (-16°C)
Last update 17 Mar 4:54 am CDT
Extended Forecast for

Elsah IL

  • Today

    Today: Increasing clouds, with a high near 34. Northwest wind 6 to 10 mph becoming south in the afternoon.

    High: 34 °F

    Increasing
    Clouds

  • Tonight

    Tonight: A chance of snow before 3am, then a chance of rain.  Cloudy, with a low around 30. Southeast wind 7 to 11 mph, with gusts as high as 21 mph.  Chance of precipitation is 40%.

    Low: 30 °F

    Chance Snow
    then Chance
    Rain/Snow

  • Wednesday

    Wednesday: Partly sunny, then gradually becoming sunny, with a high near 64. South wind 8 to 10 mph becoming west in the afternoon.

    High: 64 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 42. Light and variable wind.

    Low: 42 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 73. Light and variable wind becoming southwest 5 to 7 mph in the morning.

    High: 73 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 34. Northwest wind 6 to 10 mph becoming south in the afternoon.
Tonight
A chance of snow before 3am, then a chance of rain. Cloudy, with a low around 30. Southeast wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Wednesday
Partly sunny, then gradually becoming sunny, with a high near 64. South wind 8 to 10 mph becoming west in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 42. Light and variable wind.
Thursday
Mostly sunny, with a high near 73. Light and variable wind becoming southwest 5 to 7 mph in the morning.
Thursday Night
Mostly clear, with a low around 46.
Friday
Mostly sunny, with a high near 76.
Friday Night
Mostly clear, with a low around 49.
Saturday
Sunny, with a high near 78.
Saturday Night
Mostly clear, with a low around 53.
Sunday
Sunny, with a high near 74.
Sunday Night
Partly cloudy, with a low around 41.
Monday
Partly sunny, with a high near 56.
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ABOUT THIS FORECAST

 
Point Forecast:
Elsah IL
 38.96°N 90.36°W (Elev. 492 ft)
3:31 am CDT Mar 17, 2026
5am CDT Mar 17, 2026-6pm CDT Mar 23, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database