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.

Fair

19°F

-7°C

Humidity 71%
Wind Speed S 8 mph
Barometer 30.24 in (1024.5 mb)
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Wind Chill9°F (-13°C)
Last update 24 Feb 1:54 am CST
Extended Forecast for

Whiteside MO

  • Overnight

    Overnight: Partly cloudy, with a low around 19. South wind 6 to 9 mph, with gusts as high as 20 mph.

    Low: 19 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 57. Breezy, with a south wind 10 to 15 mph becoming southwest 16 to 21 mph in the afternoon. Winds could gust as high as 36 mph.

    High: 57 °F

    Mostly Cloudy
    then Cloudy
    and Breezy

  • Tuesday Night

    Tuesday Night: Cloudy, then gradually becoming partly cloudy, with a low around 31. Southwest wind 8 to 13 mph becoming light and variable after midnight. Winds could gust as high as 23 mph.

    Low: 31 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 49. Light and variable wind becoming north around 5 mph in the afternoon.

    High: 49 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Rain likely. Mostly cloudy, with a low around 33. East wind 5 to 7 mph. Chance of precipitation is 70%.

    Low: 33 °F

    Rain Likely

  • Thursday

    Thursday: A 20 percent chance of rain before noon. Partly sunny, with a high near 48.

    High: 48 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 19. South wind 6 to 9 mph, with gusts as high as 20 mph.
Tuesday
Mostly cloudy, with a high near 57. Breezy, with a south wind 10 to 15 mph becoming southwest 16 to 21 mph in the afternoon. Winds could gust as high as 36 mph.
Tuesday Night
Cloudy, then gradually becoming partly cloudy, with a low around 31. Southwest wind 8 to 13 mph becoming light and variable after midnight. Winds could gust as high as 23 mph.
Wednesday
Partly sunny, with a high near 49. Light and variable wind becoming north around 5 mph in the afternoon.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 33. East wind 5 to 7 mph. Chance of precipitation is 70%.
Thursday
A 20 percent chance of rain before noon. Partly sunny, with a high near 48.
Thursday Night
Mostly clear, with a low around 31.
Friday
Sunny, with a high near 64.
Friday Night
Mostly clear, with a low around 38.
Saturday
Mostly sunny, with a high near 62.
Saturday Night
Partly cloudy, with a low around 28.
Sunday
A chance of rain and snow. Partly sunny, with a high near 42. Chance of precipitation is 30%.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 28. Chance of precipitation is 50%.
Monday
A chance of rain and snow. Mostly cloudy, with a high near 44. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Whiteside MO
 39.19°N 91.01°W (Elev. 794 ft)
Last Update:
12:26 am CST Feb 24, 2026
Forecast Valid:
2am CST Feb 24, 2026-6pm CST Mar 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation