Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89° N Lon: 90.03° W Elev: 518 ft.

Fair

91°F

33°C

Humidity 34%
Wind Speed SW 12 mph
Barometer 29.86 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 12 Oct 3:50 pm CDT
Detailed forecast for

Montgomery County

Tonight
Partly cloudy this evening, then clearing. Lows in the upper 60s. Southwest winds 5 to 10 mph.
Tuesday
Sunny. Highs in the lower 90s. Southwest winds 5 to 10 mph.
Tuesday Night
Mostly clear in the evening, then mostly cloudy with a chance of showers with a slight chance of thunderstorms after midnight. Lows around 70. Southwest winds around 5 mph. Chance of rain 50 percent.
Wednesday
Showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Cooler with highs around 80. Southwest winds around 5 mph, becoming northwest in the afternoon. Chance of rain near 100 percent.
Wednesday Night
Mostly cloudy with a slight chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the lower 60s. Northeast winds around 5 mph. Chance of rain 70 percent.
Thursday
Showers with a chance of thunderstorms. Highs around 80. Chance of rain 90 percent.
Thursday Night
Partly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then mostly cloudy after midnight. Cooler with lows in the lower 50s. Chance of rain 30 percent.
Friday
Mostly sunny. Much cooler with highs in the lower 60s.
Friday Night Through Saturday Night
Mostly clear. Lows in the upper 30s. Highs in the lower 60s.
Sunday
Sunny. Highs in the upper 60s.
Sunday Night And Monday
Partly cloudy. Lows in the mid 40s. Highs in the mid 70s.



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318 PM CDT Mon Oct 12 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database