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.

Thunderstorm in Vicinity Fog/Mist

69°F

21°C

Humidity 93%
Wind Speed E 9 mph
Barometer 29.99 in (1015.2 mb)
Dewpoint 67°F (19°C)
Visibility 5.00 mi
Last update 15 Oct 8:54 am CDT
Extended Forecast for

5 Miles NE Troy MO

  • Today

    Today: Showers and possibly a thunderstorm before 1pm, then a chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Patchy fog before 11am. High near 78. Light and variable wind becoming southwest 5 to 9 mph in the morning. Chance of precipitation is 90%.

    High: 78 °F

    Showers and
    Patchy Fog
    then Showers
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely before 10pm, then scattered showers between 10pm and midnight. Cloudy, then becoming partly cloudy toward daybreak, with a low around 47. Northwest wind 9 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    Low: 47 °F

    Showers
    Likely then
    Mostly Cloudy

  • Friday

    Friday: Increasing clouds, with a high near 56. Northwest wind 14 to 16 mph, with gusts as high as 30 mph.

    High: 56 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 38. North wind 5 to 13 mph, with gusts as high as 26 mph.

    Low: 38 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 60. Calm wind.

    High: 60 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 37.

    Low: 37 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

Detailed Forecast

Today
Showers and possibly a thunderstorm before 1pm, then a chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Patchy fog before 11am. High near 78. Light and variable wind becoming southwest 5 to 9 mph in the morning. Chance of precipitation is 90%.
Tonight
Showers and thunderstorms likely before 10pm, then scattered showers between 10pm and midnight. Cloudy, then becoming partly cloudy toward daybreak, with a low around 47. Northwest wind 9 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Friday
Increasing clouds, with a high near 56. Northwest wind 14 to 16 mph, with gusts as high as 30 mph.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 38. North wind 5 to 13 mph, with gusts as high as 26 mph.
Saturday
Sunny, with a high near 60. Calm wind.
Saturday Night
Clear, with a low around 37.
Sunday
Sunny, with a high near 68.
Sunday Night
Mostly clear, with a low around 40.
Monday
Mostly sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
Sunny, with a high near 75.
Tuesday Night
Mostly clear, with a low around 47.
Wednesday
Sunny, with a high near 78.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NE Troy MO
 39.01°N 90.93°W (Elev. 499 ft)
Last Update:
9:16 am CDT Oct 15, 2026
Forecast Valid:
9am CDT Oct 15, 2026-6pm CDT Oct 21, 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