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Heavy rain and flash flooding possible in portions of the Southwest this weekend

An upper-level low in the Southwest U.S. will act as a trigger for thunderstorms this weekend. The area of greatest concern is in New Mexico, southeast Utah and portions of southern Colorado. Storms will be slow moving and could bring several rounds of rain to the same areas. Rainfall amounts may exceed 3 inches in localized areas. Flash Flood Watches are in effect. Read More >

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56° N Lon: 90.15° W Elev: 410 ft.




Humidity 87%
Wind Speed Calm
Barometer 29.96 in (1014.0 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 20 Aug 1:53 am CDT
Detailed forecast for

St. Clair County

Rest Of Tonight
Clear. Low around 70. Light wind.
Mostly sunny. High in the mid 90s. Light wind.
Sunday Night
Partly cloudy. Low in the lower to mid 70s. Light wind.
Hot and humid. Partly cloudy. A 20 percent chance of showers and thunderstorms in the afternoon. High in the lower 90s. Highest heat index readings of around 100 late in the afternoon. Light wind.
Monday Night
Partly cloudy. A 30 percent chance of showers and thunderstorms after midnight. Low in the mid 70s. Light wind.
Showers and thunderstorms likely. High in the mid 80s. Chance of rain 60 percent.
Tuesday Night
Cooler. Partly cloudy. A 30 percent chance of showers and thunderstorms in the evening. Low in the lower 60s.
Wednesday Through Friday
Mostly clear. High around 80. Low around 60.
Friday Night And Saturday
Partly cloudy. Low around 60. High in the lower 80s.

Click Map For Forecast
136 AM CDT Sun Aug 20 2017

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database