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.

Overcast

46°F

8°C

Humidity 83%
Wind Speed W 14 mph
Barometer 29.99 in (1015.3 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 7 Mar 1:54 pm CST
Extended Forecast for

2 Miles ENE Elsah IL

  • This Afternoon

    This Afternoon: Cloudy, with a steady temperature around 46. West wind 11 to 18 mph, with gusts as high as 28 mph.

    High: 46 °F

    Cloudy

  • Tonight

    Tonight: Partly cloudy, with a low around 34. Northwest wind 5 to 10 mph becoming light west after midnight.

    Low: 34 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 66. Southwest wind 5 to 10 mph.

    High: 66 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 45. South wind around 8 mph.

    Low: 45 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 77. South wind 7 to 14 mph, with gusts as high as 22 mph.

    High: 77 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 81.

    High: 81 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 49. Chance of precipitation is 90%.

    Low: 49 °F

    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm before noon, then showers likely. High near 65. Chance of precipitation is 90%.

    High: 65 °F

    Showers then
    Showers
    Likely

Detailed Forecast

This Afternoon
Cloudy, with a steady temperature around 46. West wind 11 to 18 mph, with gusts as high as 28 mph.
Tonight
Partly cloudy, with a low around 34. Northwest wind 5 to 10 mph becoming light west after midnight.
Sunday
Sunny, with a high near 66. Southwest wind 5 to 10 mph.
Sunday Night
Clear, with a low around 45. South wind around 8 mph.
Monday
Sunny, with a high near 77. South wind 7 to 14 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 59.
Tuesday
A 50 percent chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 81.
Tuesday Night
Showers and possibly a thunderstorm. Low around 49. Chance of precipitation is 90%.
Wednesday
Showers and possibly a thunderstorm before noon, then showers likely. High near 65. Chance of precipitation is 90%.
Wednesday Night
A 20 percent chance of showers before midnight. Mostly clear, with a low around 32.
Thursday
Sunny, with a high near 53.
Thursday Night
Mostly cloudy, with a low around 43.
Friday
Partly sunny, with a high near 66.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Elsah IL
 38.95°N 90.33°W (Elev. 554 ft)
Last Update:
2:11 pm CST Mar 7, 2026
Forecast Valid:
2pm CST Mar 7, 2026-6pm CDT Mar 13, 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