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.

Light Rain Fog/Mist

46°F

8°C

Humidity 93%
Wind Speed E 13 mph
Barometer 29.93 in (1013.5 mb)
Dewpoint 44°F (7°C)
Visibility 4.00 mi
Wind Chill40°F (4°C)
Last update 14 Feb 8:54 pm CST
Extended Forecast for

Whiteside MO

  • Tonight

    Tonight: Rain, mainly before 1am. Low around 42. East wind around 7 mph. Chance of precipitation is 90%.

    Low: 42 °F

    Rain then
    Rain Likely

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 57. Northeast wind 5 to 7 mph becoming calm in the afternoon.

    High: 57 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38. Light and variable wind.

    Low: 38 °F

    Mostly Clear

  • Washington's Birthday

    Washington's Birthday: Partly sunny, with a high near 63. South wind 5 to 8 mph, with gusts as high as 20 mph.

    High: 63 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 44. South wind around 6 mph.

    Low: 44 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 66.

    High: 66 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 56.

    Low: 56 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

Detailed Forecast

Tonight
Rain, mainly before 1am. Low around 42. East wind around 7 mph. Chance of precipitation is 90%.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 57. Northeast wind 5 to 7 mph becoming calm in the afternoon.
Sunday Night
Mostly clear, with a low around 38. Light and variable wind.
Washington's Birthday
Partly sunny, with a high near 63. South wind 5 to 8 mph, with gusts as high as 20 mph.
Monday Night
Mostly cloudy, with a low around 44. South wind around 6 mph.
Tuesday
Mostly cloudy, with a high near 66.
Tuesday Night
Mostly cloudy, with a low around 56.
Wednesday
Sunny, with a high near 67.
Wednesday Night
Mostly clear, with a low around 42.
Thursday
A 30 percent chance of rain, mainly after noon. Sunny, with a high near 65.
Thursday Night
A 20 percent chance of rain. Partly cloudy, with a low around 35.
Friday
A 20 percent chance of rain. Mostly sunny, with a high near 48.
Friday Night
A 20 percent chance of snow. Partly cloudy, with a low around 28.
Saturday
Mostly sunny, with a high near 48.
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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:
7:06 pm CST Feb 14, 2026
Forecast Valid:
9pm CST Feb 14, 2026-6pm CST Feb 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