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
65°F
18°C
| Humidity | 93% |
| Wind Speed | Calm |
| Barometer | 30.12 in (1019.4 mb) |
| Dewpoint | 63°F (17°C) |
| Visibility | 10.00 mi |
| Last update | 28 Aug 11:53 pm CDT |
Extended Forecast for
Crystal City MO
Overnight
Low: 60 °F
Patchy Fog
Saturday
High: 91 °F
Patchy Fog
then Mostly
SunnySaturday Night
Low: 66 °F
Partly Cloudy
Sunday
High: 96 °F
Sunny
Sunday Night
Low: 71 °F
Mostly Clear
Monday
High: 98 °F
Hot
Monday Night
Low: 74 °F
Mostly Clear
Tuesday
High: 99 °F
Hot
Tuesday Night
Low: 75 °F
Mostly Clear
Detailed Forecast
Overnight
Patchy fog after 2am. Otherwise, mostly clear, with a low around 60. Calm wind.
Saturday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 91. Calm wind becoming southeast around 5 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 66. Light south wind.
Sunday
Sunny, with a high near 96. South wind 3 to 7 mph.
Sunday Night
Mostly clear, with a low around 71. South wind 3 to 5 mph.
Monday
Sunny and hot, with a high near 98.
Monday Night
Mostly clear, with a low around 74.
Tuesday
Sunny and hot, with a high near 99.
Tuesday Night
Mostly clear, with a low around 75.
Wednesday
Sunny and hot, with a high near 98.
Wednesday Night
Mostly clear, with a low around 75.
Thursday
Sunny and hot, with a high near 99.
Thursday Night
Mostly clear, with a low around 74.
Friday
Sunny and hot, with a high near 97.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Crystal City MO
38.22°N 90.39°W (Elev. 446 ft)
38.22°N 90.39°W (Elev. 446 ft)
11:26 pm CDT Aug 28, 2026
12am CDT Aug 29, 2026-6pm CDT Sep 4, 2026
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