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.

Overcast

55°F

13°C

Humidity 57%
Wind Speed N 6 mph
Barometer 30.01 in (1016.3 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Wind Chill54°F (12°C)
Last update 1 May 8:54 pm CDT
Extended Forecast for

Carrollton IL

  • Tonight

    Tonight: A 20 percent chance of showers before 10pm. Mostly cloudy, with a low around 38. Calm wind becoming north around 5 mph after midnight.

    Low: 38 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 59. North wind 6 to 9 mph.

    High: 59 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 38. Northwest wind around 6 mph becoming calm.

    Low: 38 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 74. Southwest wind 8 to 16 mph, with gusts as high as 26 mph.

    High: 74 °F

    Sunny then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 50. Southwest wind 7 to 10 mph. Chance of precipitation is 40%.

    Low: 50 °F

    Chance
    T-storms

  • Monday

    Monday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 78. Chance of precipitation is 30%.

    High: 78 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 53. Chance of precipitation is 60%.

    Low: 53 °F

    Chance
    T-storms then
    Showers
    Likely

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 64. Chance of precipitation is 70%.

    High: 64 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 43.

    Low: 43 °F

    Chance
    Showers

Detailed Forecast

Tonight
A 20 percent chance of showers before 10pm. Mostly cloudy, with a low around 38. Calm wind becoming north around 5 mph after midnight.
Saturday
Mostly sunny, with a high near 59. North wind 6 to 9 mph.
Saturday Night
Mostly clear, with a low around 38. Northwest wind around 6 mph becoming calm.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 74. Southwest wind 8 to 16 mph, with gusts as high as 26 mph.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 50. Southwest wind 7 to 10 mph. Chance of precipitation is 40%.
Monday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 78. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 53. Chance of precipitation is 60%.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 64. Chance of precipitation is 70%.
Tuesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 43.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 60.
Wednesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 41.
Thursday
Mostly sunny, with a high near 63.
Thursday Night
Partly cloudy, with a low around 42.
Friday
Sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Carrollton IL
 39.29°N 90.4°W (Elev. 568 ft)
Last Update:
8:31 pm CDT May 1, 2026
Forecast Valid:
9pm CDT May 1, 2026-6pm CDT May 8, 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