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

45°F

7°C

Humidity 66%
Wind Speed E 10 mph
Barometer 30.08 in (1018.3 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 13 Nov 11:54 pm CST
Extended Forecast for

2 Miles WNW Elsah IL

  • Overnight

    Overnight: Partly cloudy, with a low around 48. Southeast wind around 6 mph.

    Low: 48 °F

    Partly Cloudy

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 76. Southeast wind 6 to 9 mph becoming southwest in the afternoon.

    High: 76 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around 60. Southwest wind 6 to 9 mph.

    Low: 60 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 77. Southwest wind 9 to 14 mph becoming west in the afternoon. Winds could gust as high as 24 mph.

    High: 77 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 43. North wind 6 to 10 mph.

    Low: 43 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

  • Monday

    Monday: A 30 percent chance of rain after noon. Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny
    then Chance
    Rain

  • Monday Night

    Monday Night: Rain likely, mainly before midnight. Mostly cloudy, with a low around 45. Chance of precipitation is 60%.

    Low: 45 °F

    Rain Likely

Detailed Forecast

Overnight
Partly cloudy, with a low around 48. Southeast wind around 6 mph.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 76. Southeast wind 6 to 9 mph becoming southwest in the afternoon.
Friday Night
Partly cloudy, with a low around 60. Southwest wind 6 to 9 mph.
Saturday
Partly sunny, with a high near 77. Southwest wind 9 to 14 mph becoming west in the afternoon. Winds could gust as high as 24 mph.
Saturday Night
Mostly clear, with a low around 43. North wind 6 to 10 mph.
Sunday
Sunny, with a high near 60.
Sunday Night
Mostly clear, with a low around 39.
Monday
A 30 percent chance of rain after noon. Mostly sunny, with a high near 58.
Monday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 45. Chance of precipitation is 60%.
Tuesday
A 20 percent chance of rain before noon. Partly sunny, with a high near 61.
Tuesday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 44.
Wednesday
A 40 percent chance of rain. Mostly cloudy, with a high near 59.
Wednesday Night
Rain likely. Cloudy, with a low around 47. Chance of precipitation is 60%.
Thursday
Rain likely. Mostly cloudy, with a high near 60. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Elsah IL
 38.96°N 90.39°W (Elev. 407 ft)
Last Update:
9:41 pm CST Nov 13, 2025
Forecast Valid:
12am CST Nov 14, 2025-6pm CST Nov 20, 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