Current conditions at

St. Louis Regional Airport (KALN)

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

Partly Cloudy

93°F

34°C

Humidity 50%
Wind Speed SW 14 G 23 mph
Barometer 29.94 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index101°F (38°C)
Last update 21 Jun 2:50 pm CDT
Detailed forecast for

Macoupin County

This Afternoon
Sunny. Near steady temperature in the lower 90s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Heat index values up to 106.
Tonight
Clear. Lows in the mid 70s. South winds 10 to 15 mph with gusts up to 25 mph. Heat index values up to 105 early in the evening.
Sunday
Sunny. Highs in the mid 90s. Southwest winds 10 to 15 mph.
Sunday Night
Mostly clear. Lows in the mid 70s. South winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 100 early in the evening.
Monday
Sunny. Highs in the mid 90s. Southwest winds 5 to 10 mph.
Monday Night
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s.
Tuesday
Mostly sunny with a slight chance of showers and thunderstorms. Highs in the lower 90s. Chance of rain 20 percent.
Tuesday Night
Partly cloudy. Lows in the lower 70s.
Wednesday
Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 20 percent.
Wednesday Night
Partly cloudy. Lows in the mid 70s.
Thursday
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 30 percent.
Thursday Night
Partly cloudy. A chance of showers and thunderstorms, mainly in the evening. Lows in the lower 70s. Chance of rain 30 percent.
Friday
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.



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224 PM CDT Sat Jun 21 2025
 
 

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