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.

Fair

76°F

24°C

Humidity 94%
Wind Speed SW 5 mph
Barometer 30.03 in (1016.4 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index76°F (24°C)
Last update 27 Jul 7:54 am CDT
Extended Forecast for

3 Miles NE Troy MO

Heat Advisory July 27, 08:33am until July 29, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 27, 08:33am until July 29, 07:00pm

    NOW until 7:00pm Tue

    Heat Advisory

  • Today

    High: 92 °F

    Scattered
    T-storms

  • Tonight

    Tonight: Isolated showers and thunderstorms before 8pm. Partly cloudy, with a low around 75. Light and variable wind. Chance of precipitation is 20%.

    Low: 75 °F

    Isolated
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 96. Heat index values as high as 111. Southwest wind 3 to 6 mph.

    High: 96 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 76. Calm wind.

    Low: 76 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 96. Calm wind.

    High: 96 °F

    Sunny

  • Tuesday Night

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

    Low: 75 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.

    High: 92 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.

    Low: 69 °F

    Chance
    T-storms

Detailed Forecast

Today
Scattered showers and thunderstorms, mainly between noon and 4pm. Increasing clouds, with a high near 92. Heat index values as high as 107. Light and variable wind becoming west around 6 mph in the morning. Chance of precipitation is 30%.
Tonight
Isolated showers and thunderstorms before 8pm. Partly cloudy, with a low around 75. Light and variable wind. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 96. Heat index values as high as 111. Southwest wind 3 to 6 mph.
Monday Night
Mostly clear, with a low around 76. Calm wind.
Tuesday
Sunny, with a high near 96. Calm wind.
Tuesday Night
Mostly clear, with a low around 75.
Wednesday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Thursday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 79.
Thursday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 77.
Friday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 61.
Saturday
A 20 percent chance of showers. Partly sunny, with a high near 79.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Troy MO
 39.01°N 90.96°W (Elev. 499 ft)
Last Update:
8:26 am CDT Jul 27, 2025
Forecast Valid:
8am CDT Jul 27, 2025-6pm CDT Aug 2, 2025
 
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