National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Thunderstorm in Vicinity

49°F

9°C

Humidity 83%
Wind Speed E 6 mph
Barometer 29.80 in (1009.1 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 18 Nov 6:54 am CST
Extended Forecast for

Elsah IL

  • Today

    Today: A 50 percent chance of rain and thunderstorms before noon. Mostly cloudy, with a high near 68. Southeast wind 6 to 8 mph becoming northwest in the afternoon.

    High: 68 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 43. North wind 3 to 6 mph.

    Low: 43 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 61. Light and variable wind becoming northwest around 5 mph.

    High: 61 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 48. Light and variable wind.

    Low: 48 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: Rain likely. Cloudy, with a high near 63. South wind 5 to 8 mph. Chance of precipitation is 70%.

    High: 63 °F

    Rain Likely

  • Thursday Night

    Thursday Night: Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 49. Chance of precipitation is 70%.

    Low: 49 °F

    Rain Likely

  • Friday

    Friday: Rain. High near 57. Chance of precipitation is 80%.

    High: 57 °F

    Rain

  • Friday Night

    Friday Night: A 50 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 40.

    Low: 40 °F

    Chance Rain
    then Slight
    Chance Rain

  • Saturday

    Saturday: Mostly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny

Detailed Forecast

Today
A 50 percent chance of rain and thunderstorms before noon. Mostly cloudy, with a high near 68. Southeast wind 6 to 8 mph becoming northwest in the afternoon.
Tonight
Mostly cloudy, with a low around 43. North wind 3 to 6 mph.
Wednesday
Mostly cloudy, with a high near 61. Light and variable wind becoming northwest around 5 mph.
Wednesday Night
A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 48. Light and variable wind.
Thursday
Rain likely. Cloudy, with a high near 63. South wind 5 to 8 mph. Chance of precipitation is 70%.
Thursday Night
Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 49. Chance of precipitation is 70%.
Friday
Rain. High near 57. Chance of precipitation is 80%.
Friday Night
A 50 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 40.
Saturday
Mostly sunny, with a high near 57.
Saturday Night
Mostly clear, with a low around 39.
Sunday
Sunny, with a high near 60.
Sunday Night
Partly cloudy, with a low around 42.
Monday
A 20 percent chance of rain. Partly sunny, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Elsah IL
 38.93°N 90.36°W (Elev. 407 ft)
Last Update:
7:26 am CST Nov 18, 2025
Forecast Valid:
7am CST Nov 18, 2025-6pm CST Nov 24, 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