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.

Rain

64°F

18°C

Humidity 87%
Wind Speed SW 7 mph
Barometer 29.92 in (1012.6 mb)
Dewpoint 60°F (16°C)
Visibility 7.00 mi
Last update 4 Apr 4:54 am CDT
Extended Forecast for

3 Miles WNW Carrollton IL

  • Overnight

    Overnight: Showers and possibly a thunderstorm. Steady temperature around 64. Southwest wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.

    Low: 64 °F

    Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm before 10am, then a slight chance of showers between 10am and noon. Temperature falling to around 51 by noon. West wind 13 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 80%.

    High: 59 °F⇓

    Showers then
    Mostly Cloudy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 37. West wind 10 to 15 mph, with gusts as high as 24 mph.

    Low: 37 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 57. Northwest wind 10 to 13 mph, with gusts as high as 21 mph.

    High: 57 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 38. West wind around 7 mph.

    Low: 38 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 50.

    High: 50 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Steady temperature around 64. Southwest wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.
Saturday
Showers and possibly a thunderstorm before 10am, then a slight chance of showers between 10am and noon. Temperature falling to around 51 by noon. West wind 13 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 80%.
Saturday Night
Partly cloudy, with a low around 37. West wind 10 to 15 mph, with gusts as high as 24 mph.
Sunday
Sunny, with a high near 57. Northwest wind 10 to 13 mph, with gusts as high as 21 mph.
Sunday Night
Clear, with a low around 38. West wind around 7 mph.
Monday
Sunny, with a high near 57.
Monday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 33.
Tuesday
Partly sunny, with a high near 50.
Tuesday Night
Mostly cloudy, with a low around 40.
Wednesday
Partly sunny, with a high near 71.
Wednesday Night
Partly cloudy, with a low around 52.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 74.
Thursday Night
A 20 percent chance of showers. Partly cloudy, with a low around 54.
Friday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Carrollton IL
 39.29°N 90.46°W (Elev. 607 ft)
Last Update:
4:36 am CDT Apr 4, 2026
Forecast Valid:
5am CDT Apr 4, 2026-6pm CDT Apr 10, 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