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

47°F

8°C

Humidity 52%
Wind Speed NW 9 mph
Barometer 29.89 in (1012.1 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 27 Feb 8:54 pm CST
Extended Forecast for

Whiteside MO

  • Tonight

    Tonight: Mostly clear, with a low around 35. Northwest wind 7 to 9 mph becoming northeast after midnight.

    Low: 35 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of rain between 1pm and 3pm. Mostly sunny, with a high near 63. Northeast wind 7 to 9 mph becoming southwest in the afternoon. Chance of precipitation is 20%.

    High: 63 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 26. Southeast wind 7 to 11 mph becoming north in the evening. Winds could gust as high as 24 mph.

    Low: 26 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of rain after noon, mixing with snow after 3pm. Mostly cloudy, with a high near 42. Northeast wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    High: 42 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: Rain and snow before 3am, then rain, snow, and freezing rain likely. Low around 30. East wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. Little or no ice accumulation expected. New snow accumulation of less than one inch possible.

    Low: 30 °F

    Wintry Mix

  • Monday

    Monday: A chance of rain, snow, and freezing rain before noon, then a chance of rain. Cloudy, with a high near 42. Chance of precipitation is 40%.

    High: 42 °F

    Chance Wintry
    Mix then
    Chance Rain

  • Monday Night

    Monday Night: Rain likely, mainly after midnight. Cloudy, with a low around 35. Chance of precipitation is 70%.

    Low: 35 °F

    Rain Likely

  • Tuesday

    Tuesday: Rain, with thunderstorms also possible after noon. High near 55. Chance of precipitation is 90%.

    High: 55 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain likely, with thunderstorms also possible after midnight. Cloudy, with a low around 42. Chance of precipitation is 70%.

    Low: 42 °F

    Rain Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 35. Northwest wind 7 to 9 mph becoming northeast after midnight.
Saturday
A slight chance of rain between 1pm and 3pm. Mostly sunny, with a high near 63. Northeast wind 7 to 9 mph becoming southwest in the afternoon. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 26. Southeast wind 7 to 11 mph becoming north in the evening. Winds could gust as high as 24 mph.
Sunday
A chance of rain after noon, mixing with snow after 3pm. Mostly cloudy, with a high near 42. Northeast wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Sunday Night
Rain and snow before 3am, then rain, snow, and freezing rain likely. Low around 30. East wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. Little or no ice accumulation expected. New snow accumulation of less than one inch possible.
Monday
A chance of rain, snow, and freezing rain before noon, then a chance of rain. Cloudy, with a high near 42. Chance of precipitation is 40%.
Monday Night
Rain likely, mainly after midnight. Cloudy, with a low around 35. Chance of precipitation is 70%.
Tuesday
Rain, with thunderstorms also possible after noon. High near 55. Chance of precipitation is 90%.
Tuesday Night
Rain likely, with thunderstorms also possible after midnight. Cloudy, with a low around 42. Chance of precipitation is 70%.
Wednesday
Rain likely and possibly a thunderstorm. Cloudy, with a high near 62. Chance of precipitation is 70%.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 46. Chance of precipitation is 70%.
Thursday
Rain likely. Partly sunny, with a high near 64. Chance of precipitation is 60%.
Thursday Night
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 49.
Friday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 66. Chance of precipitation is 70%.
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ABOUT THIS FORECAST

 
Point Forecast:
Whiteside MO
 39.17°N 91.01°W (Elev. 712 ft)
Last Update:
7:56 pm CST Feb 27, 2026
Forecast Valid:
9pm CST Feb 27, 2026-6pm CST Mar 6, 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