Dangerous Heat and Possible Flooding
Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >
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 | 87% |
| Wind Speed | Calm |
| Barometer | 30.12 in (1019.3 mb) |
| Dewpoint | 61°F (16°C) |
| Visibility | 10.00 mi |
| Last update | 29 Aug 3:54 am CDT |
Extended Forecast for
5 Miles SSW St. Charles County Smartt Airport MO
Today
High: 90 °F
Mostly Sunny
Tonight
Low: 70 °F
Partly Cloudy
Sunday
High: 95 °F
Mostly Sunny
Sunday Night
Low: 75 °F
Mostly Clear
Monday
High: 98 °F
Hot
Monday Night
Low: 78 °F
Mostly Clear
Tuesday
High: 100 °F
Hot
Tuesday Night
Low: 78 °F
Mostly Clear
Wednesday
High: 99 °F
Hot
Detailed Forecast
Today
Mostly sunny, with a high near 90. Calm wind becoming south 5 to 9 mph in the morning.
Tonight
Partly cloudy, with a low around 70. South wind around 8 mph.
Sunday
Mostly sunny, with a high near 95. South wind 6 to 11 mph.
Sunday Night
Mostly clear, with a low around 75. South wind 7 to 9 mph.
Monday
Sunny and hot, with a high near 98. Southwest wind 7 to 10 mph.
Monday Night
Mostly clear, with a low around 78.
Tuesday
Sunny and hot, with a high near 100.
Tuesday Night
Mostly clear, with a low around 78.
Wednesday
Sunny and hot, with a high near 99.
Wednesday Night
Mostly clear, with a low around 78.
Thursday
Mostly sunny and hot, with a high near 98.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77.
Friday
A 20 percent chance of showers. Mostly sunny, with a high near 96.
Additional Forecasts and Information
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Point Forecast:
5 Miles SSW St. Charles County Smartt Airport MO
38.87°N 90.48°W (Elev. 436 ft)
38.87°N 90.48°W (Elev. 436 ft)
3:26 am CDT Aug 29, 2026
4am CDT Aug 29, 2026-6pm CDT Sep 4, 2026
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