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

23°F

-5°C

Humidity 42%
Wind Speed SW 10 mph
Barometer 30.02 in (1017.2 mb)
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Wind Chill13°F (-11°C)
Last update 18 Jan 1:54 pm CST
Extended Forecast for

3 Miles WNW Carrollton IL

Cold Weather Advisory January 19, 03:00am until January 19, 10:00am
Click here for hazard details and duration
Cold Weather Advisory

  • This Afternoon

    This Afternoon: A chance of flurries after 5pm. Cloudy, with a high near 29. South wind 10 to 14 mph, with gusts as high as 24 mph.

    High: 29 °F

    Chance
    Flurries

  • Tonight

    Tonight: A chance of flurries before 8pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 7. Blustery, with a northwest wind 11 to 21 mph, with gusts as high as 36 mph.

    Low: 7 °F

    Chance
    Flurries and
    Blustery

  • M.L.King Day

    M.L.King Day: Sunny and cold, with a high near 18. Wind chill values as low as -10. Northwest wind 8 to 17 mph, with gusts as high as 29 mph.

    High: 18 °F

    Cold

  • Monday Night

    Monday Night: Partly cloudy, with a low around 11. Southwest wind around 6 mph.

    Low: 11 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 32. Southwest wind 6 to 9 mph.

    High: 32 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 41.

    High: 41 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 19.

    Low: 19 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 32.

    High: 32 °F

    Sunny

Detailed Forecast

This Afternoon
A chance of flurries after 5pm. Cloudy, with a high near 29. South wind 10 to 14 mph, with gusts as high as 24 mph.
Tonight
A chance of flurries before 8pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 7. Blustery, with a northwest wind 11 to 21 mph, with gusts as high as 36 mph.
M.L.King Day
Sunny and cold, with a high near 18. Wind chill values as low as -10. Northwest wind 8 to 17 mph, with gusts as high as 29 mph.
Monday Night
Partly cloudy, with a low around 11. Southwest wind around 6 mph.
Tuesday
Mostly sunny, with a high near 32. Southwest wind 6 to 9 mph.
Tuesday Night
Mostly cloudy, with a low around 26.
Wednesday
Mostly sunny, with a high near 41.
Wednesday Night
Partly cloudy, with a low around 19.
Thursday
Sunny, with a high near 32.
Thursday Night
Partly cloudy, with a low around 19.
Friday
A 20 percent chance of snow. Mostly cloudy, with a high near 33.
Friday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 11.
Saturday
A 30 percent chance of snow. Mostly cloudy, with a high near 21.
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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:
1:51 pm CST Jan 18, 2026
Forecast Valid:
2pm CST Jan 18, 2026-6pm CST Jan 24, 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