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.

Fog/Mist

54°F

12°C

Humidity 97%
Wind Speed SE 6 mph
Barometer 29.78 in (1008.2 mb)
Dewpoint 53°F (12°C)
Visibility 0.75 mi
Wind Chill52°F (11°C)
Last update 25 Dec 11:54 pm CST
Extended Forecast for

3 Miles NNW Elsah IL

  • Overnight

    Overnight: Partly cloudy, with a low around 56. South wind around 9 mph.

    Low: 56 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 65. Southwest wind 7 to 11 mph becoming northwest in the afternoon.

    High: 65 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 45. Northwest wind around 6 mph becoming light and variable.

    Low: 45 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 65. Southeast wind 6 to 11 mph.

    High: 65 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 40 percent chance of rain after midnight. Cloudy, with a low around 58. South wind 8 to 10 mph.

    Low: 58 °F

    Cloudy then
    Chance Rain

  • Sunday

    Sunday: Showers and possibly a thunderstorm. Temperature rising to near 66 by noon, then falling to around 54 during the remainder of the day. Chance of precipitation is 80%.

    High: 66 °F⇓

    Showers

  • Sunday Night

    Sunday Night: A chance of rain and snow before midnight. Mostly cloudy, with a low around 20. Blustery. Chance of precipitation is 50%.

    Low: 20 °F

    Blustery.
    Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Monday

    Monday: Sunny, with a high near 27. Blustery.

    High: 27 °F

    Sunny and
    Blustery

  • Monday Night

    Monday Night: Mostly clear, with a low around 17.

    Low: 17 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 56. South wind around 9 mph.
Friday
Partly sunny, with a high near 65. Southwest wind 7 to 11 mph becoming northwest in the afternoon.
Friday Night
Mostly cloudy, with a low around 45. Northwest wind around 6 mph becoming light and variable.
Saturday
Mostly cloudy, with a high near 65. Southeast wind 6 to 11 mph.
Saturday Night
A 40 percent chance of rain after midnight. Cloudy, with a low around 58. South wind 8 to 10 mph.
Sunday
Showers and possibly a thunderstorm. Temperature rising to near 66 by noon, then falling to around 54 during the remainder of the day. Chance of precipitation is 80%.
Sunday Night
A chance of rain and snow before midnight. Mostly cloudy, with a low around 20. Blustery. Chance of precipitation is 50%.
Monday
Sunny, with a high near 27. Blustery.
Monday Night
Mostly clear, with a low around 17.
Tuesday
Sunny, with a high near 35.
Tuesday Night
Partly cloudy, with a low around 24.
Wednesday
Sunny, with a high near 39.
Wednesday Night
Mostly clear, with a low around 24.
New Year's Day
Sunny, with a high near 36.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Elsah IL
 39°N 90.39°W (Elev. 640 ft)
Last Update:
10:26 pm CST Dec 25, 2025
Forecast Valid:
12am CST Dec 26, 2025-6pm CST Jan 1, 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