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.

Partly Cloudy

82°F

28°C

Humidity 82%
Wind Speed SE 8 mph
Barometer 29.86 in (1010.6 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 27 Jun 4:54 pm CDT
Extended Forecast for

3 Miles SE Whiteside MO

Heat Advisory June 28, 12:00pm until July 3, 12:00am
Click here for hazard details and duration
Heat Advisory

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 82. Calm wind.

    High: 82 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms, mainly between 9pm and 5am. Mostly cloudy, with a low around 71. Light east wind.

    Low: 71 °F

    Chance
    T-storms

  • Sunday

    Sunday: Mostly cloudy through mid morning, then gradual clearing, with a high near 92. Heat index values as high as 103. South wind 5 to 9 mph, with gusts as high as 20 mph.

    High: 92 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 74. South wind 6 to 8 mph.

    Low: 74 °F

    Increasing
    Clouds

  • Monday

    Monday: Mostly sunny, with a high near 93. South wind 6 to 9 mph, with gusts as high as 21 mph.

    High: 93 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 95.

    High: 95 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 75.

    Low: 75 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 82. Calm wind.
Tonight
A 50 percent chance of showers and thunderstorms, mainly between 9pm and 5am. Mostly cloudy, with a low around 71. Light east wind.
Sunday
Mostly cloudy through mid morning, then gradual clearing, with a high near 92. Heat index values as high as 103. South wind 5 to 9 mph, with gusts as high as 20 mph.
Sunday Night
Increasing clouds, with a low around 74. South wind 6 to 8 mph.
Monday
Mostly sunny, with a high near 93. South wind 6 to 9 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 75.
Tuesday
Sunny, with a high near 95.
Tuesday Night
Clear, with a low around 75.
Wednesday
Sunny, with a high near 94.
Wednesday Night
Mostly clear, with a low around 75.
Thursday
Sunny, with a high near 94.
Thursday Night
Mostly clear, with a low around 74.
Friday
Sunny, with a high near 93.
Friday Night
Mostly clear, with a low around 74.
Independence Day
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 92.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Whiteside MO
 39.15°N 90.98°W (Elev. 801 ft)
Last Update:
2:31 pm CDT Jun 27, 2026
Forecast Valid:
4pm CDT Jun 27, 2026-6pm CDT Jul 4, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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