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.

Partly Cloudy

82°F

28°C

Humidity 60%
Wind Speed S 12 mph
Barometer 30.02 in (1016.3 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 24 Jun 1:54 pm CDT
Extended Forecast for

Carrollton IL

Flood Watch June 25, 01:00pm until June 26, 07:00am
Click here for hazard details and duration
Flood Watch

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms, mainly after 3pm. Mostly cloudy, with a high near 80. West wind around 8 mph.

    High: 80 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before midnight, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    T-storms

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly after 10am. Partly sunny, with a high near 83. Light and variable wind.

    High: 83 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 65. Light and variable wind becoming southeast around 5 mph after midnight. Chance of precipitation is 80%.

    Low: 65 °F

    Chance
    T-storms then
    T-storms

  • Friday

    Friday: Showers and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm. High near 79. Southeast wind around 7 mph. Chance of precipitation is 80%.

    High: 79 °F

    T-storms

  • Friday Night

    Friday Night: Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.

    Low: 65 °F

    T-storms
    Likely

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.

    High: 85 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.

    Low: 69 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly after 3pm. Mostly cloudy, with a high near 80. West wind around 8 mph.
Tonight
A chance of showers and thunderstorms before midnight, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Thursday
A 30 percent chance of showers and thunderstorms, mainly after 10am. Partly sunny, with a high near 83. Light and variable wind.
Thursday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 65. Light and variable wind becoming southeast around 5 mph after midnight. Chance of precipitation is 80%.
Friday
Showers and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm. High near 79. Southeast wind around 7 mph. Chance of precipitation is 80%.
Friday Night
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Sunday
Mostly sunny, with a high near 92.
Sunday Night
Mostly clear, with a low around 72.
Monday
Sunny, with a high near 95.
Monday Night
Mostly clear, with a low around 73.
Tuesday
Sunny, with a high near 95.
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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:
1:21 pm CDT Jun 24, 2026
Forecast Valid:
2pm CDT Jun 24, 2026-6pm CDT Jun 30, 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