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

42°F

6°C

Humidity 89%
Wind Speed SE 7 mph
Barometer 29.85 in (1010.8 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 9 Mar 7:54 am CDT
Extended Forecast for

Whiteside MO

  • Today

    Today: Sunny, with a high near 79. Southwest wind 8 to 16 mph, with gusts as high as 29 mph.

    High: 79 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 58. Southwest wind 6 to 8 mph, with gusts as high as 20 mph.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 81. South wind 6 to 11 mph, with gusts as high as 24 mph.

    High: 81 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7pm. Low around 49. Southwest wind 9 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 100%.

    Low: 49 °F

    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. Temperature falling to around 47 by 5pm. West wind 11 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 90%.

    High: 63 °F⇓

    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 79. Southwest wind 8 to 16 mph, with gusts as high as 29 mph.
Tonight
Mostly clear, with a low around 58. Southwest wind 6 to 8 mph, with gusts as high as 20 mph.
Tuesday
A 50 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 81. South wind 6 to 11 mph, with gusts as high as 24 mph.
Tuesday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7pm. Low around 49. Southwest wind 9 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 100%.
Wednesday
Showers and possibly a thunderstorm. Temperature falling to around 47 by 5pm. West wind 11 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 90%.
Wednesday Night
Partly cloudy, with a low around 30.
Thursday
Sunny, with a high near 53.
Thursday Night
Mostly cloudy, with a low around 44.
Friday
Partly sunny, with a high near 60.
Friday Night
Mostly cloudy, with a low around 37.
Saturday
Partly sunny, with a high near 64.
Saturday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 45.
Sunday
A 40 percent chance of rain and thunderstorms. Mostly cloudy, with a high near 65.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Whiteside MO
 39.17°N 91.01°W (Elev. 712 ft)
Last Update:
6:51 am CDT Mar 9, 2026
Forecast Valid:
8am CDT Mar 9, 2026-6pm CDT Mar 15, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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