Current conditions at

St. Louis Downtown Airport (KCPS)

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

Fair

51°F

11°C

Humidity 28%
Wind Speed NW 20 G 25 mph
Barometer 30.09 in (1018.9 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 20 Mar 4:53 pm CDT
Detailed forecast for

St. Clair County

Tonight
Mostly clear. Lows in the lower 30s. West winds 10 to 15 mph with gusts up to 25 mph, becoming south around 5 mph after midnight.
Friday
Mostly sunny in the morning, then becoming mostly cloudy. Breezy and not as cool with highs in the mid 60s. South winds 15 to 25 mph with gusts up to 40 mph.
Friday Night
Partly cloudy in the evening, then clearing. Lows in the upper 30s. West winds 15 to 20 mph with gusts up to 30 mph.
Saturday
Sunny. Highs in the lower 60s. Northwest winds 5 to 10 mph, becoming west in the afternoon.
Saturday Night
Mostly cloudy. A chance of showers in the evening, then showers with a slight chance of thunderstorms after midnight. Lows in the upper 40s. Southeast winds 10 to 15 mph. Chance of rain 90 percent.
Sunday
Becoming partly sunny in the afternoon. A slight chance of thunderstorms. Showers, mainly in the morning. Highs in the mid 60s. Chance of rain 90 percent.
Sunday Night
Partly cloudy in the evening, then clearing. Lows around 40.
Monday
Sunny. Highs around 60.
Monday Night Through Tuesday Night
Partly cloudy with a 20 percent chance of showers. Lows around 40. Highs in the mid 60s.
Wednesday
Mostly sunny. Highs in the mid 60s.
Wednesday Night And Thursday
Partly cloudy. A 20 percent chance of showers. Lows in the upper 30s. Highs in the mid 60s.



Click Map For Forecast
539 PM CDT Thu Mar 20 2025
 
 

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