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Hazardous Weather Conditions

Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

34°F

1°C

Humidity 67%
Wind Speed NE 10 mph
Barometer 30.41 in (1030.1 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 1 Mar 9:54 am CST
Extended Forecast for

St. Charles County Smartt Airport MO

Winter Weather Advisory March 1, 06:00pm until March 2, 06:00am
Click here for hazard details and duration
Winter Weather Advisory

  • Today

    Today: Mostly cloudy, with a high near 47. Northeast wind 11 to 13 mph, with gusts as high as 20 mph.

    High: 47 °F

    Mostly Cloudy

  • Tonight

    Tonight: Rain and snow, becoming all rain after 3am. Low around 31. East wind around 11 mph. Chance of precipitation is 100%. New snow accumulation of around an inch possible.

    Low: 31 °F

    Rain/Snow

  • Monday

    Monday: A chance of rain, mainly before 9am, then a slight chance of showers after noon. Cloudy, with a high near 46. East wind 8 to 10 mph. Chance of precipitation is 40%.

    High: 46 °F

    Chance Rain

  • Monday Night

    Monday Night: Showers. Low around 38. Southeast wind around 7 mph. Chance of precipitation is 80%.

    Low: 38 °F

    Showers

  • Tuesday

    Tuesday: Showers. High near 64. South wind 7 to 10 mph. Chance of precipitation is 90%.

    High: 64 °F

    Showers then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers, with thunderstorms also possible after 3am. Low around 50. Chance of precipitation is 80%.

    Low: 50 °F

    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 66. Chance of precipitation is 80%.

    High: 66 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely. Mostly cloudy, with a low around 48. Chance of precipitation is 70%.

    Low: 48 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers likely, mainly before noon. Partly sunny, with a high near 68. Chance of precipitation is 60%.

    High: 68 °F

    Showers
    Likely

Detailed Forecast

Today
Mostly cloudy, with a high near 47. Northeast wind 11 to 13 mph, with gusts as high as 20 mph.
Tonight
Rain and snow, becoming all rain after 3am. Low around 31. East wind around 11 mph. Chance of precipitation is 100%. New snow accumulation of around an inch possible.
Monday
A chance of rain, mainly before 9am, then a slight chance of showers after noon. Cloudy, with a high near 46. East wind 8 to 10 mph. Chance of precipitation is 40%.
Monday Night
Showers. Low around 38. Southeast wind around 7 mph. Chance of precipitation is 80%.
Tuesday
Showers. High near 64. South wind 7 to 10 mph. Chance of precipitation is 90%.
Tuesday Night
Showers, with thunderstorms also possible after 3am. Low around 50. Chance of precipitation is 80%.
Wednesday
Showers and possibly a thunderstorm. High near 66. Chance of precipitation is 80%.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 48. Chance of precipitation is 70%.
Thursday
Showers likely, mainly before noon. Partly sunny, with a high near 68. Chance of precipitation is 60%.
Thursday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 51.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 73. Chance of precipitation is 60%.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 49. Chance of precipitation is 70%.
Saturday
Showers likely. Cloudy, with a high near 63. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
St. Charles County Smartt Airport MO
 38.94°N 90.45°W (Elev. 427 ft)
Last Update:
8:26 am CST Mar 1, 2026
Forecast Valid:
10am CST Mar 1, 2026-6pm CST Mar 7, 2026
 
Forecast Discussion
 
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Additional Resources

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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