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

69°F

21°C

Humidity 90%
Wind Speed E 6 mph
Barometer 29.93 in (1012.9 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 29 Jul 5:54 am CDT
Extended Forecast for

Whiteside MO

  • Today

    Today: Partly sunny, then gradually becoming sunny, with a high near 88. East wind 3 to 7 mph.

    High: 88 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Clear, with a low around 66. East wind around 6 mph becoming calm in the evening.

    Low: 66 °F

    Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 88. East wind 3 to 7 mph.

    High: 88 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 69. East wind 3 to 7 mph.

    Low: 69 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers and thunderstorms. High near 85. South wind 6 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 80%.

    High: 85 °F

    T-storms

  • Friday Night

    Friday Night: Showers and thunderstorms likely before 1am, then a chance of showers. Mostly cloudy, with a low around 67. Chance of precipitation is 70%.

    Low: 67 °F

    T-storms
    Likely

  • Saturday

    Saturday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. Chance of precipitation is 40%.

    High: 79 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 20 percent chance of showers. Partly cloudy, with a low around 64.

    Low: 64 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: A 20 percent chance of showers after 1pm. Sunny, with a high near 83.

    High: 83 °F

    Sunny then
    Slight Chance
    Showers

Detailed Forecast

Today
Partly sunny, then gradually becoming sunny, with a high near 88. East wind 3 to 7 mph.
Tonight
Clear, with a low around 66. East wind around 6 mph becoming calm in the evening.
Thursday
Increasing clouds, with a high near 88. East wind 3 to 7 mph.
Thursday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 69. East wind 3 to 7 mph.
Friday
Showers and thunderstorms. High near 85. South wind 6 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 80%.
Friday Night
Showers and thunderstorms likely before 1am, then a chance of showers. Mostly cloudy, with a low around 67. Chance of precipitation is 70%.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. Chance of precipitation is 40%.
Saturday Night
A 20 percent chance of showers. Partly cloudy, with a low around 64.
Sunday
A 20 percent chance of showers after 1pm. Sunny, with a high near 83.
Sunday Night
Mostly clear, with a low around 65.
Monday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 85.
Monday Night
Mostly clear, with a low around 66.
Tuesday
Sunny, with a high near 88.
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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:
6:11 am CDT Jul 29, 2026
Forecast Valid:
6am CDT Jul 29, 2026-6pm CDT Aug 4, 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