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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

45°F

7°C

Humidity 49%
Wind Speed NE 8 mph
Barometer 30.03 in (1016.8 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 28 Feb 3:54 am CST
Extended Forecast for

St. Charles County Smartt Airport MO

  • Today

    Today: A 30 percent chance of rain, mainly between noon and 2pm. Mostly sunny, with a high near 62. Light and variable wind becoming southeast 5 to 9 mph in the morning.

    High: 62 °F

    Mostly Sunny
    then Chance
    Rain

  • Tonight

    Tonight: A 20 percent chance of rain before 7pm. Partly cloudy, with a low around 26. East wind 6 to 13 mph becoming north in the evening.

    Low: 26 °F

    Slight Chance
    Rain then
    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 43. Northeast wind around 11 mph.

    High: 43 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Snow likely. Cloudy, with a low around 28. East wind around 10 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    Low: 28 °F

    Snow Likely

  • Monday

    Monday: A chance of rain and snow before 9am, then a chance of rain. Cloudy, with a high near 42. Southeast wind around 11 mph. Chance of precipitation is 40%.

    High: 42 °F

    Chance
    Rain/Snow
    then Slight
    Chance Rain

  • Monday Night

    Monday Night: Rain. Steady temperature around 40. Chance of precipitation is 80%.

    Low: 40 °F

    Rain

  • Tuesday

    Tuesday: Rain and possibly a thunderstorm. High near 60. Chance of precipitation is 90%.

    High: 60 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm. Low around 42. Chance of precipitation is 80%.

    Low: 42 °F

    Rain

  • Wednesday

    Wednesday: Rain likely and possibly a thunderstorm. Cloudy, with a high near 61. Chance of precipitation is 70%.

    High: 61 °F

    Rain Likely

Detailed Forecast

Today
A 30 percent chance of rain, mainly between noon and 2pm. Mostly sunny, with a high near 62. Light and variable wind becoming southeast 5 to 9 mph in the morning.
Tonight
A 20 percent chance of rain before 7pm. Partly cloudy, with a low around 26. East wind 6 to 13 mph becoming north in the evening.
Sunday
Increasing clouds, with a high near 43. Northeast wind around 11 mph.
Sunday Night
Snow likely. Cloudy, with a low around 28. East wind around 10 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Monday
A chance of rain and snow before 9am, then a chance of rain. Cloudy, with a high near 42. Southeast wind around 11 mph. Chance of precipitation is 40%.
Monday Night
Rain. Steady temperature around 40. Chance of precipitation is 80%.
Tuesday
Rain and possibly a thunderstorm. High near 60. Chance of precipitation is 90%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 42. Chance of precipitation is 80%.
Wednesday
Rain likely and possibly a thunderstorm. Cloudy, with a high near 61. Chance of precipitation is 70%.
Wednesday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 44. Chance of precipitation is 60%.
Thursday
A 50 percent chance of rain. Partly sunny, with a high near 66.
Thursday Night
A 50 percent chance of rain. Partly cloudy, with a low around 48.
Friday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 69. Chance of precipitation is 70%.
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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:
3:57 am CST Feb 28, 2026
Forecast Valid:
4am CST Feb 28, 2026-6pm CST Mar 6, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation