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.

Fair

72°F

22°C

Humidity 68%
Wind Speed SW 15 mph
Barometer 29.89 in (1011.6 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 15 Apr 11:54 am CDT
Extended Forecast for

3 Miles WNW Carrollton IL

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 80. Southwest wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.

    High: 80 °F

    Showers

  • Tonight

    Tonight: Showers and thunderstorms, mainly before 2am. Low around 61. South wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.

    Low: 61 °F

    Showers

  • Thursday

    Thursday: Sunny, with a high near 81. West wind 8 to 10 mph.

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 57. South wind 3 to 6 mph.

    Low: 57 °F

    Mostly Clear

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. South wind 7 to 15 mph, with gusts as high as 25 mph.

    High: 86 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 49. Chance of precipitation is 80%.

    Low: 49 °F

    Showers

  • Saturday

    Saturday: A 40 percent chance of showers. Partly sunny, with a high near 64.

    High: 64 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before 1am. Mostly clear, with a low around 38.

    Low: 38 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 80. Southwest wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.
Tonight
Showers and thunderstorms, mainly before 2am. Low around 61. South wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
Thursday
Sunny, with a high near 81. West wind 8 to 10 mph.
Thursday Night
Mostly clear, with a low around 57. South wind 3 to 6 mph.
Friday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. South wind 7 to 15 mph, with gusts as high as 25 mph.
Friday Night
Showers and possibly a thunderstorm. Low around 49. Chance of precipitation is 80%.
Saturday
A 40 percent chance of showers. Partly sunny, with a high near 64.
Saturday Night
A 20 percent chance of showers before 1am. Mostly clear, with a low around 38.
Sunday
Sunny, with a high near 60.
Sunday Night
Clear, with a low around 39.
Monday
Sunny, with a high near 69.
Monday Night
Mostly clear, with a low around 48.
Tuesday
Mostly sunny, with a high near 75.
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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:
12:06 pm CDT Apr 15, 2026
Forecast Valid:
12pm CDT Apr 15, 2026-6pm CDT Apr 21, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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