National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Overcast

14°F

-10°C

Humidity 61%
Wind Speed W 10 mph
Barometer 30.22 in (1023.8 mb)
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Wind Chill1°F (-17°C)
Last update 18 Jan 3:54 am CST
Extended Forecast for

Whiteside MO

  • Today

    Today: Increasing clouds, with a high near 30. Southwest wind 7 to 15 mph, with gusts as high as 26 mph.

    High: 30 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 7. Blustery, with a northwest wind 14 to 20 mph, with gusts as high as 34 mph.

    Low: 7 °F

    Partly Cloudy
    then Clear
    and Blustery

  • M.L.King Day

    M.L.King Day: Sunny and cold, with a high near 19. Wind chill values as low as -10. Northwest wind 8 to 17 mph, with gusts as high as 30 mph.

    High: 19 °F

    Cold

  • Monday Night

    Monday Night: Mostly clear, with a low around 10. Southwest wind 3 to 7 mph.

    Low: 10 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 36. Southwest wind 6 to 8 mph.

    High: 36 °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 40.

    High: 40 °F

    Mostly Sunny

  • Wednesday Night

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

    Low: 19 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 34.

    High: 34 °F

    Mostly Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 30. Southwest wind 7 to 15 mph, with gusts as high as 26 mph.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 7. Blustery, with a northwest wind 14 to 20 mph, with gusts as high as 34 mph.
M.L.King Day
Sunny and cold, with a high near 19. Wind chill values as low as -10. Northwest wind 8 to 17 mph, with gusts as high as 30 mph.
Monday Night
Mostly clear, with a low around 10. Southwest wind 3 to 7 mph.
Tuesday
Mostly sunny, with a high near 36. Southwest wind 6 to 8 mph.
Tuesday Night
Mostly cloudy, with a low around 26.
Wednesday
Mostly sunny, with a high near 40.
Wednesday Night
Partly cloudy, with a low around 19.
Thursday
Mostly sunny, with a high near 34.
Thursday Night
Partly cloudy, with a low around 25.
Friday
A 20 percent chance of rain. Mostly cloudy, with a high near 40.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 17. Chance of precipitation is 30%.
Saturday
A 30 percent chance of snow. Partly sunny, with a high near 24.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Whiteside MO
 39.17°N 91.01°W (Elev. 712 ft)
Last Update:
3:16 am CST Jan 18, 2026
Forecast Valid:
4am CST Jan 18, 2026-6pm CST Jan 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation