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, Spirit Of St. Louis Airport (KSUS)
Lat: 38.66°NLon: 90.66°WElev: 463ft.
Fair
60°F
16°C
| Humidity | 96% |
| Wind Speed | Calm |
| Barometer | 30.11 in (1019.0 mb) |
| Dewpoint | 59°F (15°C) |
| Visibility | 10.00 mi |
| Last update | 28 Aug 5:54 am CDT |
Extended Forecast for
Saint Peters MO
Today
High: 86 °F
Sunny
Tonight
Low: 64 °F
Mostly Clear
Saturday
High: 88 °F
Mostly Sunny
Saturday Night
Low: 69 °F
Partly Cloudy
Sunday
High: 93 °F
Sunny
Sunday Night
Low: 74 °F
Mostly Clear
Monday
High: 97 °F
Hot
Monday Night
Low: 76 °F
Mostly Clear
Tuesday
High: 97 °F
Hot
Detailed Forecast
Today
Sunny, with a high near 86. Light and variable wind.
Tonight
Mostly clear, with a low around 64. Calm wind.
Saturday
Mostly sunny, with a high near 88. Calm wind becoming south around 6 mph in the morning.
Saturday Night
Partly cloudy, with a low around 69. South wind 5 to 7 mph.
Sunday
Sunny, with a high near 93. South wind 6 to 8 mph.
Sunday Night
Mostly clear, with a low around 74.
Monday
Sunny and hot, with a high near 97.
Monday Night
Mostly clear, with a low around 76.
Tuesday
Sunny and hot, with a high near 97.
Tuesday Night
Mostly clear, with a low around 78.
Wednesday
Sunny and hot, with a high near 97.
Wednesday Night
Mostly clear, with a low around 77.
Thursday
A 20 percent chance of showers. Sunny and hot, with a high near 97.
Additional Forecasts and Information
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Point Forecast:
Saint Peters MO
38.78°N 90.59°W (Elev. 492 ft)
38.78°N 90.59°W (Elev. 492 ft)
5:21 am CDT Aug 28, 2026
6am CDT Aug 28, 2026-6pm CDT Sep 3, 2026
Additional Resources
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