Current conditions at

St. Louis, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66° N Lon: 90.66° W Elev: 463 ft.

Fair

48°F

9°C

Humidity 96%
Wind Speed Calm
Barometer 29.90 in (1012.3 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 26 Dec 6:54 pm CST
Detailed forecast for

St. Charles County

Tonight
Mostly cloudy. Areas of fog after midnight. Cooler with lows in the mid 40s. North winds around 5 mph, becoming east after midnight.
Saturday
Mostly cloudy in the morning, then becoming partly sunny. Areas of fog in the morning. Highs in the lower 60s. Southeast winds 5 to 10 mph.
Saturday Night
Cloudy. A slight chance of rain after midnight. Not as cool. Near steady temperature in the lower 60s. South winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 20 percent.
Sunday
Cloudy with a slight chance of thunderstorms. A chance of rain in the morning, then rain in the afternoon. Highs in the lower 70s. Temperature falling into the mid 60s in the afternoon. Southwest winds 15 to 20 mph. Chance of rain 90 percent.
Sunday Night
Mostly cloudy with rain likely in the evening, then partly cloudy after midnight. Breezy and much cooler. Less humid with lows around 20. Northwest winds 15 to 25 mph with gusts up to 35 mph. Chance of rain 70 percent. Wind chill values as low as 5 above after midnight.
Monday
Mostly sunny and brisk. Much cooler with highs in the upper 20s. Wind chill values as low as 5 above.
Monday Night And Tuesday
Mostly clear. Lows around 20. Highs in the mid 30s.
Tuesday Night
Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 20s.
Wednesday And Wednesday Night
Mostly cloudy. Highs in the lower 40s. Lows around 20.
New Years Day Through Friday
Partly cloudy. Highs in the lower 30s. Lows around 15.



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733 PM CST Fri Dec 26 2025
 
 

Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database