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

10°F

-12°C

Humidity 61%
Wind Speed N 5 mph
Barometer 30.43 in (1031.2 mb)
Dewpoint -1°F (-18°C)
Visibility 10.00 mi
Wind Chill1°F (-17°C)
Last update 30 Jan 8:54 am CST
Extended Forecast for

3 Miles SSW Dow IL

  • Today

    Today: A chance of flurries after 1pm. Increasing clouds and cold, with a high near 17. North wind 5 to 13 mph.

    High: 17 °F

    Chance
    Flurries

  • Tonight

    Tonight: A chance of flurries before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 4. Wind chill values as low as -10. North wind 11 to 14 mph.

    Low: 4 °F

    Chance
    Flurries

  • Saturday

    Saturday: Mostly sunny and cold, with a high near 18. Wind chill values as low as -10. Northwest wind 7 to 13 mph, with gusts as high as 20 mph.

    High: 18 °F

    Cold

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 1. Northwest wind around 6 mph becoming calm in the evening.

    Low: 1 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 28. South wind 3 to 8 mph.

    High: 28 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 18.

    Low: 18 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 34.

    High: 34 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 22.

    Low: 22 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of rain and snow after noon. Mostly cloudy, with a high near 36. Chance of precipitation is 30%.

    High: 36 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

Detailed Forecast

Today
A chance of flurries after 1pm. Increasing clouds and cold, with a high near 17. North wind 5 to 13 mph.
Tonight
A chance of flurries before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 4. Wind chill values as low as -10. North wind 11 to 14 mph.
Saturday
Mostly sunny and cold, with a high near 18. Wind chill values as low as -10. Northwest wind 7 to 13 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 1. Northwest wind around 6 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 28. South wind 3 to 8 mph.
Sunday Night
Mostly cloudy, with a low around 18.
Monday
Partly sunny, with a high near 34.
Monday Night
Mostly cloudy, with a low around 22.
Tuesday
A chance of rain and snow after noon. Mostly cloudy, with a high near 36. Chance of precipitation is 30%.
Tuesday Night
A chance of rain before midnight, then a slight chance of snow. Mostly cloudy, with a low around 25. Chance of precipitation is 30%.
Wednesday
Cloudy, with a high near 33.
Wednesday Night
Mostly cloudy, with a low around 19.
Thursday
Partly sunny, with a high near 34.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Dow IL
 39°N 90.33°W (Elev. 597 ft)
Last Update:
8:26 am CST Jan 30, 2026
Forecast Valid:
9am CST Jan 30, 2026-6pm CST Feb 5, 2026
 
Forecast Discussion
 
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Additional Resources

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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