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
81°F
27°C
| Humidity | 51% |
| Wind Speed | N 8 mph |
| Barometer | 30.01 in (1015.8 mb) |
| Dewpoint | 61°F (16°C) |
| Visibility | 10.00 mi |
| Heat Index | 82°F (28°C) |
| Last update | 27 Aug 6:53 pm CDT |
Extended Forecast for
Sappington MO
Tonight
Low: 65 °F
Mostly Clear
Friday
High: 87 °F
Sunny
Friday Night
Low: 64 °F
Partly Cloudy
Saturday
High: 88 °F
Sunny
Saturday Night
Low: 70 °F
Mostly Clear
Sunday
High: 94 °F
Sunny
Sunday Night
Low: 74 °F
Mostly Clear
Monday
High: 96 °F
Sunny
Monday Night
Low: 77 °F
Mostly Clear
Detailed Forecast
Tonight
Mostly clear, with a low around 65. North wind around 6 mph becoming calm in the evening.
Friday
Sunny, with a high near 87. Light and variable wind.
Friday Night
Partly cloudy, with a low around 64. Light east wind.
Saturday
Sunny, with a high near 88. Calm wind becoming south around 6 mph in the morning.
Saturday Night
Mostly clear, with a low around 70. South wind around 6 mph.
Sunday
Sunny, with a high near 94.
Sunday Night
Mostly clear, with a low around 74.
Monday
Sunny, with a high near 96.
Monday Night
Mostly clear, with a low around 77.
Tuesday
Sunny and hot, with a high near 97.
Tuesday Night
Mostly clear, with a low around 77.
Wednesday
Sunny and hot, with a high near 97.
Wednesday Night
Mostly clear, with a low around 78.
Thursday
Sunny, with a high near 96.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Sappington MO
38.53°N 90.38°W (Elev. 604 ft)
38.53°N 90.38°W (Elev. 604 ft)
5:41 pm CDT Aug 27, 2026
7pm CDT Aug 27, 2026-6pm CDT Sep 3, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
