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

33°F

1°C

Humidity 45%
Wind Speed S 6 mph
Barometer 29.78 in (1008.8 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 15 Jan 10:54 pm CST
Extended Forecast for

Whiteside MO

  • Tonight

    Tonight: Mostly cloudy, with a steady temperature around 32. South wind around 9 mph becoming west after midnight. Winds could gust as high as 22 mph.

    Low: 32 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of snow, mainly after 5pm. Mostly cloudy, with a high near 43. West wind 9 to 16 mph, with gusts as high as 32 mph.

    High: 43 °F

    Partly Sunny
    then Chance
    Snow

  • Friday Night

    Friday Night: A 50 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 18. West wind 13 to 15 mph, with gusts as high as 28 mph.

    Low: 18 °F

    Chance Snow
    then Slight
    Chance Snow

  • Saturday

    Saturday: Partly sunny, with a high near 23. West wind 11 to 13 mph, with gusts as high as 28 mph.

    High: 23 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 9. Northwest wind 7 to 10 mph, with gusts as high as 20 mph.

    Low: 9 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 28.

    High: 28 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 11.

    Low: 11 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 21.

    High: 21 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 9.

    Low: 9 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a steady temperature around 32. South wind around 9 mph becoming west after midnight. Winds could gust as high as 22 mph.
Friday
A 30 percent chance of snow, mainly after 5pm. Mostly cloudy, with a high near 43. West wind 9 to 16 mph, with gusts as high as 32 mph.
Friday Night
A 50 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 18. West wind 13 to 15 mph, with gusts as high as 28 mph.
Saturday
Partly sunny, with a high near 23. West wind 11 to 13 mph, with gusts as high as 28 mph.
Saturday Night
Mostly clear, with a low around 9. Northwest wind 7 to 10 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 28.
Sunday Night
Partly cloudy, with a low around 11.
M.L.King Day
Sunny, with a high near 21.
Monday Night
Mostly clear, with a low around 9.
Tuesday
Sunny, with a high near 34.
Tuesday Night
Partly cloudy, with a low around 23.
Wednesday
Mostly sunny, with a high near 41.
Wednesday Night
Partly cloudy, with a low around 20.
Thursday
Partly sunny, with a high near 40.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Whiteside MO
 39.17°N 91.01°W (Elev. 712 ft)
Last Update:
9:41 pm CST Jan 15, 2026
Forecast Valid:
11pm CST Jan 15, 2026-6pm CST Jan 22, 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