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.

Fair

32°F

0°C

Humidity 61%
Wind Speed Calm
Barometer 30.31 in (1026.7 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Last update 12 Jan 8:54 am CST
Extended Forecast for

4 Miles NE Troy MO

  • Today

    Today: Sunny, with a high near 52. Southwest wind 7 to 9 mph, with gusts as high as 20 mph.

    High: 52 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 36. Southwest wind 6 to 8 mph.

    Low: 36 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 58. Southwest wind 8 to 15 mph, with gusts as high as 25 mph.

    High: 58 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 37. West wind 6 to 9 mph, with gusts as high as 20 mph.

    Low: 37 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a temperature falling to around 32 by 5pm. Northwest wind 10 to 17 mph, with gusts as high as 32 mph.

    High: 42 °F⇓

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 16.

    Low: 16 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of snow showers after noon. Partly sunny, with a high near 41.

    High: 41 °F

    Partly Sunny
    then Slight
    Chance Snow
    Showers

Detailed Forecast

Today
Sunny, with a high near 52. Southwest wind 7 to 9 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 36. Southwest wind 6 to 8 mph.
Tuesday
Increasing clouds, with a high near 58. Southwest wind 8 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 37. West wind 6 to 9 mph, with gusts as high as 20 mph.
Wednesday
Mostly cloudy, with a temperature falling to around 32 by 5pm. Northwest wind 10 to 17 mph, with gusts as high as 32 mph.
Wednesday Night
Partly cloudy, with a low around 16.
Thursday
Mostly sunny, with a high near 32.
Thursday Night
Mostly cloudy, with a low around 27.
Friday
A 20 percent chance of snow showers after noon. Partly sunny, with a high near 41.
Friday Night
Mostly cloudy, with a low around 18.
Saturday
Partly sunny, with a high near 28.
Saturday Night
Partly cloudy, with a low around 9.
Sunday
Mostly sunny, with a high near 29.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NE Troy MO
 38.99°N 90.93°W (Elev. 489 ft)
Last Update:
8:26 am CST Jan 12, 2026
Forecast Valid:
9am CST Jan 12, 2026-6pm CST Jan 18, 2026
 
Forecast Discussion
 
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Additional Resources

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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