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

13°F

-11°C

Humidity 44%
Wind Speed W 5 mph
Barometer 30.42 in (1030.9 mb)
Dewpoint -5°F (-21°C)
Visibility 10.00 mi
Wind Chill5°F (-15°C)
Last update 19 Jan 8:54 pm CST
Extended Forecast for

Whiteside MO

  • Tonight

    Tonight: Partly cloudy, with a low around 12. South wind 3 to 5 mph.

    Low: 12 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 36. Southwest wind 5 to 9 mph.

    High: 36 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 31. South wind 8 to 14 mph becoming southwest after midnight. Winds could gust as high as 28 mph.

    Low: 31 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 40. West wind 7 to 10 mph, with gusts as high as 24 mph.

    High: 40 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 20. Southwest wind 6 to 9 mph becoming northwest after midnight. Winds could gust as high as 20 mph.

    Low: 20 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 34.

    High: 34 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 7.

    Low: 7 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy and cold, with a high near 14.

    High: 14 °F

    Cold

  • Friday Night

    Friday Night: A 20 percent chance of snow. Mostly cloudy, with a low around -2.

    Low: -2 °F

    Slight Chance
    Snow

Detailed Forecast

Tonight
Partly cloudy, with a low around 12. South wind 3 to 5 mph.
Tuesday
Mostly sunny, with a high near 36. Southwest wind 5 to 9 mph.
Tuesday Night
Mostly cloudy, with a low around 31. South wind 8 to 14 mph becoming southwest after midnight. Winds could gust as high as 28 mph.
Wednesday
Sunny, with a high near 40. West wind 7 to 10 mph, with gusts as high as 24 mph.
Wednesday Night
Mostly clear, with a low around 20. Southwest wind 6 to 9 mph becoming northwest after midnight. Winds could gust as high as 20 mph.
Thursday
Mostly sunny, with a high near 34.
Thursday Night
Mostly cloudy, with a low around 7.
Friday
Mostly cloudy and cold, with a high near 14.
Friday Night
A 20 percent chance of snow. Mostly cloudy, with a low around -2.
Saturday
A 30 percent chance of snow, mainly after noon. Mostly cloudy and cold, with a high near 11.
Saturday Night
A 30 percent chance of snow. Partly cloudy, with a low around 1.
Sunday
Mostly sunny and cold, with a high near 20.
Sunday Night
Mostly clear, with a low around 9.
Monday
Sunny, with a high near 32.
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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:
9:31 pm CST Jan 19, 2026
Forecast Valid:
9pm CST Jan 19, 2026-6pm CST Jan 26, 2026
 
Forecast Discussion
 
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Additional Resources

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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