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

23°F

-5°C

Humidity 81%
Wind Speed Calm
Barometer 30.31 in (1027.0 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Last update 12 Jan 7:54 am CST
Extended Forecast for

2 Miles ENE Elsah IL

  • Today

    Today: Sunny, with a high near 52. Southwest wind 7 to 10 mph.

    High: 52 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 34. Southwest wind 6 to 8 mph.

    Low: 34 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 58. West wind 8 to 16 mph, with gusts as high as 26 mph.

    High: 58 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 37. West wind 8 to 10 mph.

    Low: 37 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a temperature falling to around 33 by 5pm. Breezy, with a northwest wind 11 to 20 mph, with gusts as high as 31 mph.

    High: 42 °F⇓

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 17.

    Low: 17 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 31.

    High: 31 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of snow showers after noon. Partly sunny, with a high near 41.

    High: 41 °F

    Partly Sunny
    then Slight
    Chance Snow
    Showers

Detailed Forecast

Today
Sunny, with a high near 52. Southwest wind 7 to 10 mph.
Tonight
Mostly clear, with a low around 34. Southwest wind 6 to 8 mph.
Tuesday
Increasing clouds, with a high near 58. West wind 8 to 16 mph, with gusts as high as 26 mph.
Tuesday Night
A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 37. West wind 8 to 10 mph.
Wednesday
Mostly cloudy, with a temperature falling to around 33 by 5pm. Breezy, with a northwest wind 11 to 20 mph, with gusts as high as 31 mph.
Wednesday Night
Partly cloudy, with a low around 17.
Thursday
Mostly sunny, with a high near 31.
Thursday Night
Mostly cloudy, with a low around 26.
Friday
A 20 percent chance of snow showers after noon. Partly sunny, with a high near 41.
Friday Night
Mostly cloudy, with a low around 20.
Saturday
Mostly cloudy, with a high near 28.
Saturday Night
Partly cloudy, with a low around 10.
Sunday
Mostly sunny, with a high near 27.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Elsah IL
 38.95°N 90.33°W (Elev. 554 ft)
Last Update:
5:01 am CST Jan 12, 2026
Forecast Valid:
8am CST Jan 12, 2026-6pm CST Jan 18, 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