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.

Partly Cloudy

55°F

13°C

Humidity 49%
Wind Speed NE 13 mph
Barometer 30.21 in (1023.0 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 19 Apr 9:54 pm CDT
Extended Forecast for

3 Miles WNW Carrollton IL

  • Tonight

    Tonight: Partly cloudy, with a low around 37. Northeast wind 5 to 8 mph.

    Low: 37 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 66. East wind 5 to 8 mph becoming south in the afternoon.

    High: 66 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 48. Southeast wind 8 to 10 mph.

    Low: 48 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 78. Southwest wind 10 to 16 mph, with gusts as high as 28 mph.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 56. Southwest wind 9 to 11 mph, with gusts as high as 20 mph.

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 81. Breezy.

    High: 81 °F

    Sunny then
    Partly Sunny
    and Breezy

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 59. Chance of precipitation is 80%.

    Low: 59 °F

    Chance
    T-storms then
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 37. Northeast wind 5 to 8 mph.
Monday
Sunny, with a high near 66. East wind 5 to 8 mph becoming south in the afternoon.
Monday Night
Mostly clear, with a low around 48. Southeast wind 8 to 10 mph.
Tuesday
Sunny, with a high near 78. Southwest wind 10 to 16 mph, with gusts as high as 28 mph.
Tuesday Night
Mostly clear, with a low around 56. Southwest wind 9 to 11 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 58.
Thursday
Mostly sunny, with a high near 81. Breezy.
Thursday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 59. Chance of precipitation is 80%.
Friday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 73. Chance of precipitation is 60%.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 49.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 68.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 47.
Sunday
A 30 percent chance of showers. Partly sunny, with a high near 68.
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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:
9:21 pm CDT Apr 19, 2026
Forecast Valid:
10pm CDT Apr 19, 2026-6pm CDT Apr 26, 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