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. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
85°F
29°C
| Humidity | 43% |
| Wind Speed | Calm |
| Barometer | 30.08 in (1018.2 mb) |
| Dewpoint | 60°F (16°C) |
| Visibility | 10.00 mi |
| Heat Index | 85°F (29°C) |
| Last update | 28 Aug 5:53 pm CDT |
Extended Forecast for
5 Miles SW Smithton IL
Tonight
Low: 62 °F
Mostly Clear
Saturday
High: 88 °F
Mostly Sunny
Saturday Night
Low: 67 °F
Mostly Clear
Sunday
High: 93 °F
Sunny
Sunday Night
Low: 72 °F
Mostly Clear
Monday
High: 95 °F
Sunny
Monday Night
Low: 74 °F
Mostly Clear
Tuesday
High: 96 °F
Sunny
Tuesday Night
Low: 75 °F
Mostly Clear
Detailed Forecast
Tonight
Mostly clear, with a low around 62. Calm wind.
Saturday
Mostly sunny, with a high near 88. Calm wind becoming south around 6 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 67. South wind 3 to 5 mph.
Sunday
Sunny, with a high near 93. South wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 72. South wind 5 to 7 mph.
Monday
Sunny, with a high near 95.
Monday Night
Mostly clear, with a low around 74.
Tuesday
Sunny, with a high near 96.
Tuesday Night
Mostly clear, with a low around 75.
Wednesday
Sunny, with a high near 96.
Wednesday Night
Mostly clear, with a low around 76.
Thursday
Sunny, with a high near 96.
Thursday Night
A 20 percent chance of showers. Partly cloudy, with a low around 75.
Friday
Sunny, with a high near 95.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
5 Miles SW Smithton IL
38.37°N 90.04°W (Elev. 499 ft)
38.37°N 90.04°W (Elev. 499 ft)
5:26 pm CDT Aug 28, 2026
6pm CDT Aug 28, 2026-6pm CDT Sep 4, 2026
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