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

54°F

12°C

Humidity 49%
Wind Speed SE 8 mph
Barometer 29.89 in (1012.2 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill52°F (11°C)
Last update 7 Jan 4:54 pm CST
Extended Forecast for

Whiteside MO

  • Tonight

    Tonight: Increasing clouds, with a low around 44. South wind around 8 mph.

    Low: 44 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Rain before noon, then a chance of showers between noon and 3pm, then showers and possibly a thunderstorm after 3pm. High near 62. South wind 9 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 90%.

    High: 62 °F

    Showers

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 9pm, then showers likely between 9pm and midnight. Mostly cloudy, with a low around 45. South wind 10 to 16 mph becoming west after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 60%.

    Low: 45 °F

    Showers
    Likely then
    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 51. West wind 5 to 8 mph becoming light and variable in the afternoon. Winds could gust as high as 20 mph.

    High: 51 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 40 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 34. North wind 3 to 8 mph.

    Low: 34 °F

    Chance Rain

  • Saturday

    Saturday: A 20 percent chance of rain before noon. Partly sunny, with a high near 41.

    High: 41 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 22.

    Low: 22 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 33.

    High: 33 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 22.

    Low: 22 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 44. South wind around 8 mph.
Thursday
Rain before noon, then a chance of showers between noon and 3pm, then showers and possibly a thunderstorm after 3pm. High near 62. South wind 9 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 90%.
Thursday Night
Showers likely and possibly a thunderstorm before 9pm, then showers likely between 9pm and midnight. Mostly cloudy, with a low around 45. South wind 10 to 16 mph becoming west after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 60%.
Friday
Mostly cloudy, with a high near 51. West wind 5 to 8 mph becoming light and variable in the afternoon. Winds could gust as high as 20 mph.
Friday Night
A 40 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 34. North wind 3 to 8 mph.
Saturday
A 20 percent chance of rain before noon. Partly sunny, with a high near 41.
Saturday Night
Partly cloudy, with a low around 22.
Sunday
Sunny, with a high near 33.
Sunday Night
Mostly clear, with a low around 22.
Monday
Mostly sunny, with a high near 46.
Monday Night
Mostly clear, with a low around 31.
Tuesday
Mostly sunny, with a high near 49.
Tuesday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 33.
Wednesday
A 20 percent chance of rain. Mostly cloudy, with a high near 40.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Whiteside MO
 39.17°N 91.01°W (Elev. 712 ft)
Last Update:
5:21 pm CST Jan 7, 2026
Forecast Valid:
5pm CST Jan 7, 2026-6pm CST Jan 14, 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