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NWS St. Louis Announces Changes To May 16, 2025 Tornado Damage Assessment

After a year-long review of new ground survey data and aerial imagery, NWS St. Louis made several adjustments to the May 16, 2025 tornado damage assessment. Read More >

Hazardous Weather Conditions

Current conditions at

St. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

65°F

18°C

Humidity 61%
Wind Speed E 6 mph
Barometer 30.15 in (1020.6 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 21 May 10:54 am CDT
Extended Forecast for

5 Miles NNE Troy MO

  • Today

    Today: Partly sunny, with a high near 70. East wind 6 to 8 mph.

    High: 70 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 55. East wind 6 to 9 mph.

    Low: 55 °F

    Mostly Cloudy

  • Friday

    Friday: Showers likely, with thunderstorms also possible after 1pm. Cloudy, with a high near 68. East wind 5 to 8 mph. Chance of precipitation is 60%.

    High: 68 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 56. Light and variable wind.

    Low: 56 °F

    Chance
    Showers

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. Calm wind.

    High: 79 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 58.

    Low: 58 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 79. Chance of precipitation is 50%.

    High: 79 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 59.

    Low: 59 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Memorial Day

    Memorial Day: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82.

    High: 82 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
Partly sunny, with a high near 70. East wind 6 to 8 mph.
Tonight
Mostly cloudy, with a low around 55. East wind 6 to 9 mph.
Friday
Showers likely, with thunderstorms also possible after 1pm. Cloudy, with a high near 68. East wind 5 to 8 mph. Chance of precipitation is 60%.
Friday Night
A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 56. Light and variable wind.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. Calm wind.
Saturday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 58.
Sunday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 79. Chance of precipitation is 50%.
Sunday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 59.
Memorial Day
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82.
Monday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Chance of precipitation is 20%.
Tuesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 64.
Wednesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NNE Troy MO
 39.04°N 90.93°W (Elev. 600 ft)
Last Update:
8:21 am CDT May 21, 2026
Forecast Valid:
11am CDT May 21, 2026-6pm CDT May 27, 2026
 
Forecast Discussion
 
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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