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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Whiteside MO

  • This Afternoon

    This Afternoon: A 20 percent chance of showers. Mostly cloudy, with a steady temperature around 40. Northwest wind around 17 mph, with gusts as high as 31 mph.

    High: 40 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 29. Northwest wind 5 to 15 mph, with gusts as high as 28 mph.

    Low: 29 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Sunny, with a high near 53. Light west wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 22 mph.

    High: 53 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 43. South wind 10 to 18 mph, with gusts as high as 36 mph.

    Low: 43 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 57. Northwest wind 8 to 14 mph, with gusts as high as 28 mph.

    High: 57 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 59.

    High: 59 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 20 percent chance of rain and thunderstorms after 1am. Mostly cloudy, with a low around 48.

    Low: 48 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: Rain and possibly a thunderstorm. High near 62. Breezy. Chance of precipitation is 80%.

    High: 62 °F

    Rain and
    Breezy

Detailed Forecast

This Afternoon
A 20 percent chance of showers. Mostly cloudy, with a steady temperature around 40. Northwest wind around 17 mph, with gusts as high as 31 mph.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 29. Northwest wind 5 to 15 mph, with gusts as high as 28 mph.
Thursday
Sunny, with a high near 53. Light west wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 22 mph.
Thursday Night
Partly cloudy, with a low around 43. South wind 10 to 18 mph, with gusts as high as 36 mph.
Friday
Partly sunny, with a high near 57. Northwest wind 8 to 14 mph, with gusts as high as 28 mph.
Friday Night
Mostly cloudy, with a low around 34.
Saturday
Mostly cloudy, with a high near 59.
Saturday Night
A 20 percent chance of rain and thunderstorms after 1am. Mostly cloudy, with a low around 48.
Sunday
Rain and possibly a thunderstorm. High near 62. Breezy. Chance of precipitation is 80%.
Sunday Night
A chance of rain and snow before 1am. Mostly cloudy, with a low around 20. Blustery. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 33.
Monday Night
Mostly clear, with a low around 15.
Tuesday
Partly sunny, with a high near 42.
Tuesday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 30. Chance of precipitation is 20%.
Wednesday
Partly sunny, with a high near 56.
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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:
3:01 pm CDT Mar 11, 2026
Forecast Valid:
4pm CDT Mar 11, 2026-6pm CDT Mar 18, 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