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

51°F

11°C

Humidity 50%
Wind Speed N 15 G 22 mph
Barometer 30.46 in (1031.3 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 27 Mar 1:54 pm CDT
Extended Forecast for

3 Miles WNW Carrollton IL

Freeze Warning March 28, 01:00am until March 28, 09:00am
Click here for hazard details and duration
Freeze Warning

  • This Afternoon

    This Afternoon: Sunny, with a high near 51. North wind around 15 mph, with gusts as high as 28 mph.

    High: 51 °F

    Sunny

  • Tonight

    Tonight: Widespread frost after 4am. Otherwise, mostly clear, with a low around 26. North wind 6 to 11 mph, with gusts as high as 21 mph.

    Low: 26 °F

    Mostly Clear
    then Frost

  • Saturday

    Saturday: Widespread frost before 9am. Otherwise, sunny, with a high near 54. Light and variable wind becoming south 5 to 10 mph in the morning.

    High: 54 °F

    Frost then
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 39. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 39 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 68. South wind 10 to 14 mph, with gusts as high as 23 mph.

    High: 68 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of rain, then a chance of rain and thunderstorms after 1pm. Partly sunny, with a high near 82. Chance of precipitation is 50%.

    High: 82 °F

    Slight Chance
    Rain then
    Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 51. North wind around 15 mph, with gusts as high as 28 mph.
Tonight
Widespread frost after 4am. Otherwise, mostly clear, with a low around 26. North wind 6 to 11 mph, with gusts as high as 21 mph.
Saturday
Widespread frost before 9am. Otherwise, sunny, with a high near 54. Light and variable wind becoming south 5 to 10 mph in the morning.
Saturday Night
Partly cloudy, with a low around 39. South wind around 10 mph, with gusts as high as 20 mph.
Sunday
Partly sunny, with a high near 68. South wind 10 to 14 mph, with gusts as high as 23 mph.
Sunday Night
Partly cloudy, with a low around 55.
Monday
Mostly sunny, with a high near 82.
Monday Night
Partly cloudy, with a low around 65.
Tuesday
A slight chance of rain, then a chance of rain and thunderstorms after 1pm. Partly sunny, with a high near 82. Chance of precipitation is 50%.
Tuesday Night
Rain likely, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 44. Chance of precipitation is 70%.
Wednesday
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a high near 58.
Wednesday Night
Rain and thunderstorms likely. Mostly cloudy, with a low around 40. Chance of precipitation is 60%.
Thursday
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a high near 56.
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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:
1:56 pm CDT Mar 27, 2026
Forecast Valid:
2pm CDT Mar 27, 2026-6pm CDT Apr 2, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation