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

64°F

18°C

Humidity 65%
Wind Speed SW 10 mph
Barometer 30.01 in (1016.0 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 22 Apr 2:54 am CDT
Extended Forecast for

Whiteside MO

  • Overnight

    Overnight: Partly cloudy, with a low around 58. Southwest wind around 9 mph, with gusts as high as 20 mph.

    Low: 58 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 77. Southwest wind around 8 mph.

    High: 77 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 58. South wind 3 to 6 mph.

    Low: 58 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 80. South wind 7 to 14 mph, with gusts as high as 29 mph.

    High: 80 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 61. South wind around 11 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

    Low: 61 °F

    Slight Chance
    T-storms then
    Showers

  • Friday

    Friday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 76. Chance of precipitation is 70%.

    High: 76 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 1am. Mostly clear, with a low around 51. Chance of precipitation is 20%.

    Low: 51 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 58. Southwest wind around 9 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 77. Southwest wind around 8 mph.
Wednesday Night
Mostly clear, with a low around 58. South wind 3 to 6 mph.
Thursday
Mostly sunny, with a high near 80. South wind 7 to 14 mph, with gusts as high as 29 mph.
Thursday Night
A slight chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 61. South wind around 11 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Friday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 76. Chance of precipitation is 70%.
Friday Night
A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 1am. Mostly clear, with a low around 51. Chance of precipitation is 20%.
Saturday
Mostly sunny, with a high near 73.
Saturday Night
Mostly cloudy, with a low around 51.
Sunday
A 30 percent chance of showers, mainly after 1pm. Partly sunny, with a high near 74.
Sunday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.
Monday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 76. Chance of precipitation is 70%.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 48.
Tuesday
Mostly sunny, with a high near 68.
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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:
1:26 am CDT Apr 22, 2026
Forecast Valid:
3am CDT Apr 22, 2026-6pm CDT Apr 28, 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