Current conditions at

St. Louis Downtown Airport (KCPS)

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

Fair

73°F

23°C

Humidity 96%
Wind Speed Calm
Barometer 30.03 in (1016.3 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 2 Jul 3:53 am CDT
Detailed forecast for

Monroe County

Today
Sunny. A slight chance of showers and thunderstorms this afternoon. Hot with highs in the mid 90s. South winds around 5 mph. Chance of rain 20 percent. Heat index values up to 110.
Tonight
Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear after midnight. Humid with lows in the mid 70s. South winds around 5 mph. Chance of rain 20 percent. Heat index values up to 108 early in the evening.
Friday
Sunny, hot with highs in the mid 90s. South winds around 5 mph. Heat index values up to 108.
Friday Night
Mostly clear in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Humid with lows in the mid 70s. South winds around 5 mph. Chance of rain 20 percent. Heat index values up to 106 early in the evening.
Independence Day
Sunny. A chance of showers and thunderstorms in the afternoon. Hot with highs in the mid 90s. Southwest winds around 5 mph. Chance of rain 40 percent. Heat index values up to 107.
Saturday Night
Partly cloudy with a chance of showers with a slight chance of thunderstorms. Lows in the lower 70s. Chance of rain 40 percent. Heat index values up to 105 early in the evening.
Sunday
Mostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 40 percent. Heat index values up to 105.
Sunday Night
Partly cloudy. Lows in the lower 70s. Heat index values up to 105 early in the evening.
Monday And Monday Night
Partly cloudy. A chance of showers and thunderstorms. Highs around 90. Lows in the lower 70s. Chance of rain 50 percent. Heat index values up to 100.
Tuesday
Mostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs around 90. Chance of rain 40 percent. Heat index values up to 100.
Tuesday Night And Wednesday
Partly cloudy. A slight chance of showers and thunderstorms. Lows in the lower 70s. Highs in the lower 90s. Chance of rain 20 percent. Heat index values up to 100.



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327 AM CDT Thu Jul 2 2026
 
 

Additional Resources

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National Digital Forecast Database