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.

Mostly Cloudy

71°F

22°C

Humidity 55%
Wind Speed SE 12 mph
Barometer 30.21 in (1022.9 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 11 Apr 3:54 pm CDT
Extended Forecast for

3 Miles WNW Carrollton IL

  • This Afternoon

    This Afternoon: A 20 percent chance of showers. Partly sunny, with a high near 71. Southeast wind around 10 mph.

    High: 71 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A 20 percent chance of showers before 8pm. Mostly cloudy, with a low around 60. Southeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 60 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: A chance of showers and thunderstorms. Partly sunny, with a high near 80. South wind 11 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.

    High: 80 °F

    Mostly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Showers likely, then showers and possibly a thunderstorm after 7pm. Low around 63. Southwest wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.

    Low: 63 °F

    Showers

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 84. South wind 11 to 16 mph, with gusts as high as 28 mph.

    High: 84 °F

    Chance
    T-storms then
    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 67.

    Low: 67 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 86.

    High: 86 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.

    Low: 65 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 79. Chance of precipitation is 70%.

    High: 79 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
A 20 percent chance of showers. Partly sunny, with a high near 71. Southeast wind around 10 mph.
Tonight
A 20 percent chance of showers before 8pm. Mostly cloudy, with a low around 60. Southeast wind around 10 mph, with gusts as high as 20 mph.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 80. South wind 11 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.
Sunday Night
Showers likely, then showers and possibly a thunderstorm after 7pm. Low around 63. Southwest wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.
Monday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 84. South wind 11 to 16 mph, with gusts as high as 28 mph.
Monday Night
Partly cloudy, with a low around 67.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 86.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 79. Chance of precipitation is 70%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.
Thursday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81.
Thursday Night
A 20 percent chance of showers. Mostly clear, with a low around 59.
Friday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 64.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Carrollton IL
 39.29°N 90.46°W (Elev. 607 ft)
Last Update:
2:46 pm CDT Apr 11, 2026
Forecast Valid:
4pm CDT Apr 11, 2026-6pm CDT Apr 18, 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