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.

Overcast

40°F

4°C

Humidity 83%
Wind Speed N 17 G 26 mph
Barometer 30.23 in (1023.3 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 27 Mar 5:54 am CDT
Extended Forecast for

Whiteside MO

  • Overnight

    Overnight: Showers likely. Cloudy, with a low around 39. Northeast wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.

    Low: 39 °F

    Showers
    Likely

  • Friday

    Friday: A 30 percent chance of showers, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 52. North wind around 14 mph, with gusts as high as 28 mph.

    High: 52 °F

    Chance
    Showers then
    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 28. North wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 21 mph.

    Low: 28 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 55. Calm wind becoming south 5 to 8 mph in the morning.

    High: 55 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 41. South wind around 8 mph, with gusts as high as 20 mph.

    Low: 41 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 68.

    High: 68 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 30 percent chance of rain and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 64.

    Low: 64 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Showers likely. Cloudy, with a low around 39. Northeast wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Friday
A 30 percent chance of showers, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 52. North wind around 14 mph, with gusts as high as 28 mph.
Friday Night
Mostly clear, with a low around 28. North wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 21 mph.
Saturday
Sunny, with a high near 55. Calm wind becoming south 5 to 8 mph in the morning.
Saturday Night
Partly cloudy, with a low around 41. South wind around 8 mph, with gusts as high as 20 mph.
Sunday
Mostly cloudy, with a high near 68.
Sunday Night
Partly cloudy, with a low around 56.
Monday
Mostly sunny, with a high near 81.
Monday Night
A 30 percent chance of rain and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 64.
Tuesday
A 30 percent chance of rain, mainly after 1pm. Partly sunny, with a high near 84.
Tuesday Night
Rain and thunderstorms likely. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.
Wednesday
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a high near 73.
Wednesday Night
Rain likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 50. Chance of precipitation is 70%.
Thursday
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a high near 65.
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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:
5:41 am CDT Mar 27, 2026
Forecast Valid:
5am CDT Mar 27, 2026-6pm CDT Apr 2, 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