Current conditions at

St. Louis Downtown Airport (KCPS)

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

Fog/Mist

65°F

18°C

Humidity 93%
Wind Speed SE 8 mph
Barometer 29.99 in (1015.4 mb)
Dewpoint 63°F (17°C)
Visibility 4.00 mi
Last update 2 Nov 3:53 pm CST
Detailed forecast for

St. Clair County

This Afternoon
Mostly cloudy. Near steady temperature in the mid 60s. South winds 10 to 15 mph with gusts up to 25 mph.
Tonight
Mostly cloudy. Near steady temperature in the lower 60s. South winds 15 to 20 mph with gusts up to 30 mph.
Tuesday
A slight chance of thunderstorms. A chance of rain in the morning, then rain in the afternoon. Breezy with highs in the mid 70s. Temperature falling to around 70 in the afternoon. South winds 15 to 25 mph with gusts up to 35 mph. Chance of rain near 100 percent.
Tuesday Night
Rain with a slight chance of thunderstorms in the evening, then a slight chance of rain after midnight. Lows in the lower 50s. South winds 15 to 20 mph, becoming southwest 5 to 10 mph after midnight. Chance of rain near 100 percent.
Wednesday
Partly sunny. Highs in the mid 60s. West winds 10 to 15 mph.
Wednesday Night
Mostly clear. Lows in the mid 40s.
Thursday
Mostly sunny. Highs in the upper 60s.
Thursday Night
Partly cloudy with a slight chance of rain in the evening, then mostly cloudy after midnight. Lows in the mid 40s. Chance of rain 20 percent.
Friday And Friday Night
Partly cloudy. Highs around 60. Lows in the upper 30s.
Saturday
Partly sunny. Highs in the upper 50s.
Saturday Night And Sunday
Partly cloudy. Lows in the upper 30s. Highs in the lower 60s.



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129 PM CST Mon Nov 2 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database