National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fog

54°F

12°C

Humidity 100%
Wind Speed E 6 mph
Barometer 29.93 in (1013.5 mb)
Dewpoint 54°F (12°C)
Visibility 0.25 mi
Wind Chill52°F (11°C)
Last update 6 Mar 3:54 am CST
Extended Forecast for

Whiteside MO

Dense Fog Advisory until March 6, 09:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until March 6, 09:00am

    NOW until 9:00am Fri

    Dense Fog Advisory

  • Overnight

    Low: 53 °F

    Slight Chance
    T-storms and
    Patchy Dense
    Fog

  • Friday

    Friday: A slight chance of rain and thunderstorms before noon, then a slight chance of rain between noon and 1pm. Partly sunny, with a high near 77. South wind 9 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

    High: 77 °F

    Slight Chance
    T-storms then
    Slight Chance
    Rain

  • Friday Night

    Friday Night: Rain and thunderstorms before 3am, then rain and possibly a thunderstorm between 3am and 5am, then a chance of rain and thunderstorms after 5am. Low around 53. South wind 11 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 90%.

    Low: 53 °F

    Chance
    T-storms then
    Rain

  • Saturday

    Saturday: A chance of rain and thunderstorms before 9am, then a chance of rain between 9am and noon. Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 53 by 5pm. Southwest wind 10 to 16 mph becoming west in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 30%.

    High: 65 °F⇓

    Chance Rain
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 36. West wind 5 to 9 mph becoming light.

    Low: 36 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 47.

    Low: 47 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

Detailed Forecast

Overnight
A 20 percent chance of rain and thunderstorms. Patchy dense fog before 5am. Otherwise, mostly cloudy, with a low around 53. Southeast wind around 8 mph.
Friday
A slight chance of rain and thunderstorms before noon, then a slight chance of rain between noon and 1pm. Partly sunny, with a high near 77. South wind 9 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Friday Night
Rain and thunderstorms before 3am, then rain and possibly a thunderstorm between 3am and 5am, then a chance of rain and thunderstorms after 5am. Low around 53. South wind 11 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 90%.
Saturday
A chance of rain and thunderstorms before 9am, then a chance of rain between 9am and noon. Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 53 by 5pm. Southwest wind 10 to 16 mph becoming west in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 30%.
Saturday Night
Mostly clear, with a low around 36. West wind 5 to 9 mph becoming light.
Sunday
Sunny, with a high near 65.
Sunday Night
Clear, with a low around 47.
Monday
Sunny, with a high near 75.
Monday Night
A 30 percent chance of rain, mainly after midnight. Partly cloudy, with a low around 55.
Tuesday
A chance of rain, then rain and possibly a thunderstorm after noon. High near 76. Chance of precipitation is 80%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 50. Chance of precipitation is 90%.
Wednesday
A 50 percent chance of rain. Mostly cloudy, with a high near 62.
Wednesday Night
Partly cloudy, with a low around 35.
Thursday
Mostly sunny, with a high near 55.
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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:
4:21 am CST Mar 6, 2026
Forecast Valid:
4am CST Mar 6, 2026-6pm CDT Mar 12, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation