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

60°F

16°C

Humidity 23%
Wind Speed NW 13 G 18 mph
Barometer 29.95 in (1014.0 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Last update 13 Mar 4:54 pm CDT
Extended Forecast for

4 Miles NE Troy MO

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 35. Northwest wind 5 to 8 mph becoming calm in the evening.

    Low: 35 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 64. East wind 5 to 11 mph, with gusts as high as 22 mph.

    High: 64 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 54. Southeast wind 8 to 10 mph, with gusts as high as 24 mph.

    Low: 54 °F

    Partly Cloudy
    then Slight
    Chance Rain

  • Sunday

    Sunday: Rain, mainly between 1pm and 4pm, then showers and possibly a thunderstorm after 4pm. High near 68. South wind 14 to 18 mph, with gusts as high as 37 mph. Chance of precipitation is 90%.

    High: 68 °F

    Chance Rain
    then Showers

  • Sunday Night

    Sunday Night: Rain before 10pm, then snow. Some thunder is also possible. Low around 19. Blustery, with a northwest wind 18 to 24 mph, with gusts as high as 46 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    Low: 19 °F

    Rain/Snow and
    Breezy then
    Snow and
    Blustery

  • Monday

    Monday: A 30 percent chance of snow before 1pm. Mostly cloudy, with a high near 28. Blustery.

    High: 28 °F

    Chance Snow
    and Blustery

  • Monday Night

    Monday Night: Mostly clear, with a low around 11.

    Low: 11 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 38.

    High: 38 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of rain and snow. Mostly cloudy, with a low around 29. Chance of precipitation is 30%.

    Low: 29 °F

    Chance
    Rain/Snow

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 35. Northwest wind 5 to 8 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 64. East wind 5 to 11 mph, with gusts as high as 22 mph.
Saturday Night
A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 54. Southeast wind 8 to 10 mph, with gusts as high as 24 mph.
Sunday
Rain, mainly between 1pm and 4pm, then showers and possibly a thunderstorm after 4pm. High near 68. South wind 14 to 18 mph, with gusts as high as 37 mph. Chance of precipitation is 90%.
Sunday Night
Rain before 10pm, then snow. Some thunder is also possible. Low around 19. Blustery, with a northwest wind 18 to 24 mph, with gusts as high as 46 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Monday
A 30 percent chance of snow before 1pm. Mostly cloudy, with a high near 28. Blustery.
Monday Night
Mostly clear, with a low around 11.
Tuesday
Mostly sunny, with a high near 38.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 29. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 64.
Wednesday Night
Mostly clear, with a low around 39.
Thursday
Mostly sunny, with a high near 70.
Thursday Night
Mostly clear, with a low around 44.
Friday
Sunny, with a high near 69.
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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:
4:41 pm CDT Mar 13, 2026
Forecast Valid:
5pm CDT Mar 13, 2026-6pm CDT Mar 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation