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.

Fog/Mist

44°F

7°C

Humidity 96%
Wind Speed W 6 mph
Barometer 30.18 in (1021.9 mb)
Dewpoint 43°F (6°C)
Visibility 5.00 mi
Wind Chill41°F (5°C)
Last update 23 Nov 4:54 am CST
Extended Forecast for

Elsah IL

  • Today

    Today: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 57. West wind around 6 mph becoming calm in the morning.

    High: 57 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 43. Southeast wind 3 to 6 mph.

    Low: 43 °F

    Increasing
    Clouds

  • Monday

    Monday: Rain likely after noon. Cloudy, with a high near 58. South wind 6 to 10 mph. Chance of precipitation is 60%.

    High: 58 °F

    Mostly Cloudy
    then Rain
    Likely

  • Monday Night

    Monday Night: Rain, mainly before midnight. Low around 49. Southeast wind 5 to 8 mph becoming calm after midnight. Chance of precipitation is 80%.

    Low: 49 °F

    Rain then
    Chance Rain

  • Tuesday

    Tuesday: A 20 percent chance of rain after noon. Mostly cloudy, with a high near 62. Calm wind becoming west 5 to 9 mph in the morning.

    High: 62 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 46.

    High: 46 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

  • Thanksgiving Day

    Thanksgiving Day: Mostly sunny, with a high near 44.

    High: 44 °F

    Mostly Sunny

Detailed Forecast

Today
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 57. West wind around 6 mph becoming calm in the morning.
Tonight
Increasing clouds, with a low around 43. Southeast wind 3 to 6 mph.
Monday
Rain likely after noon. Cloudy, with a high near 58. South wind 6 to 10 mph. Chance of precipitation is 60%.
Monday Night
Rain, mainly before midnight. Low around 49. Southeast wind 5 to 8 mph becoming calm after midnight. Chance of precipitation is 80%.
Tuesday
A 20 percent chance of rain after noon. Mostly cloudy, with a high near 62. Calm wind becoming west 5 to 9 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 35.
Wednesday
Sunny, with a high near 46.
Wednesday Night
Partly cloudy, with a low around 28.
Thanksgiving Day
Mostly sunny, with a high near 44.
Thursday Night
Partly cloudy, with a low around 26.
Friday
Partly sunny, with a high near 46.
Friday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 32.
Saturday
A 40 percent chance of rain. Mostly cloudy, with a high near 48.
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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:
5:21 am CST Nov 23, 2025
Forecast Valid:
5am CST Nov 23, 2025-6pm CST Nov 29, 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