Hazardous Weather Conditions
Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fair
48°F
9°C
| Humidity | 93% |
| Wind Speed | Calm |
| Barometer | 30.10 in (1019.2 mb) |
| Dewpoint | 46°F (8°C) |
| Visibility | 10.00 mi |
| Last update | 21 Apr 4:54 am CDT |
Extended Forecast for
St. Charles County Smartt Airport MO
Flood Warning until further notice
NOW until further notice

Flood Warning
Today

High: 79 °F
Mostly Sunny
Tonight

Low: 54 °F
Mostly Clear
Wednesday

High: 78 °F
Mostly Sunny
Wednesday Night

Low: 57 °F
Mostly Clear
Thursday

High: 83 °F
Mostly Sunny
Thursday Night
Low: 59 °F
Slight Chance
T-storms then
Showers
LikelyFriday

High: 76 °F
Showers
Friday Night
Low: 51 °F
Slight Chance
T-storms then
Chance
Showers
Detailed Forecast
Today
Mostly sunny, with a high near 79. Southwest wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 28 mph.
Tonight
Mostly clear, with a low around 54. Southwest wind 9 to 15 mph, with gusts as high as 22 mph.
Wednesday
Mostly sunny, with a high near 78. Southwest wind 7 to 10 mph.
Wednesday Night
Mostly clear, with a low around 57. South wind around 7 mph.
Thursday
Mostly sunny, with a high near 83. South wind 8 to 18 mph, with gusts as high as 29 mph.
Thursday Night
A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.
Friday
Showers and possibly a thunderstorm. High near 76. Chance of precipitation is 80%.
Friday Night
A slight chance of showers and thunderstorms, then a chance of showers after 1am. Partly cloudy, with a low around 51. Chance of precipitation is 30%.
Saturday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 74.
Saturday Night
A 20 percent chance of showers. Partly cloudy, with a low around 50.
Sunday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 74.
Sunday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 55. Chance of precipitation is 60%.
Monday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 75. Chance of precipitation is 60%.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
St. Charles County Smartt Airport MO
38.94°N 90.45°W (Elev. 427 ft)
38.94°N 90.45°W (Elev. 427 ft)
3:01 am CDT Apr 21, 2026
5am CDT Apr 21, 2026-6pm CDT Apr 27, 2026



