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

59°F

15°C

Humidity 90%
Wind Speed W 3 mph
Barometer 30.04 in (1016.9 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 15 Jun 2:54 am CDT
Extended Forecast for

Whiteside MO

  • Overnight

    Overnight: Mostly clear, with a low around 54. Calm wind.

    Low: 54 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 76. Light west wind.

    High: 76 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 58. Calm wind becoming south around 6 mph after midnight.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 10am. Mostly sunny, with a high near 78. Southwest wind 8 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.

    High: 78 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 57. West wind around 6 mph becoming calm in the evening.

    Low: 57 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 10am. Mostly sunny, with a high near 86. Chance of precipitation is 50%.

    High: 86 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 67. Chance of precipitation is 90%.

    Low: 67 °F

    Showers

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 77. Chance of precipitation is 30%.

    High: 77 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 54. Calm wind.
Monday
Sunny, with a high near 76. Light west wind.
Monday Night
Mostly clear, with a low around 58. Calm wind becoming south around 6 mph after midnight.
Tuesday
A chance of showers, with thunderstorms also possible after 10am. Mostly sunny, with a high near 78. Southwest wind 8 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
Tuesday Night
Partly cloudy, with a low around 57. West wind around 6 mph becoming calm in the evening.
Wednesday
A chance of showers, with thunderstorms also possible after 10am. Mostly sunny, with a high near 86. Chance of precipitation is 50%.
Wednesday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 67. Chance of precipitation is 90%.
Thursday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 77. Chance of precipitation is 30%.
Thursday Night
Mostly clear, with a low around 57.
Juneteenth
Sunny, with a high near 80.
Friday Night
Mostly clear, with a low around 60.
Saturday
Mostly sunny, with a high near 83.
Saturday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Sunday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 81. Chance of precipitation is 60%.
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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:
1:26 am CDT Jun 15, 2026
Forecast Valid:
3am CDT Jun 15, 2026-6pm CDT Jun 21, 2026
 
Forecast Discussion
 
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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