Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Overcast
35°F
2°C
| Humidity | 82% |
| Wind Speed | N 14 G 22 mph |
| Barometer | 30.17 in (1021.8 mb) |
| Dewpoint | 30°F (-1°C) |
| Visibility | 8.00 mi |
| Wind Chill | 26°F (-3°C) |
| Last update | 7 Dec 3:53 pm CST |
Extended Forecast for
Caseyville IL
This Afternoon

High: 34 °F
Slight Chance
DrizzleTonight
Low: 22 °F
Slight Chance
Snow then
Mostly CloudyMonday

High: 35 °F
Decreasing
CloudsMonday Night

Low: 26 °F
Partly Cloudy
Tuesday

High: 52 °F
Mostly Sunny
Tuesday Night

Low: 40 °F
Mostly Cloudy
Wednesday

High: 48 °F
Partly Sunny
Wednesday Night
Low: 27 °F
Mostly Cloudy
then Slight
Chance SnowThursday

High: 36 °F
Chance Snow
Detailed Forecast
This Afternoon
A slight chance of drizzle after 5pm. Cloudy, with a steady temperature around 34. North wind around 14 mph.
Tonight
A slight chance of snow between 7pm and 9pm. Mostly cloudy, with a low around 22. North wind 6 to 11 mph. Chance of precipitation is 20%.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 35. North wind around 5 mph becoming calm in the morning.
Monday Night
Partly cloudy, with a low around 26. Calm wind becoming south 5 to 9 mph in the evening.
Tuesday
Mostly sunny, with a high near 52. Southwest wind 9 to 11 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly cloudy, with a low around 40.
Wednesday
Partly sunny, with a high near 48.
Wednesday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 27.
Thursday
A 30 percent chance of snow, mainly before noon. Mostly cloudy, with a high near 36.
Thursday Night
Mostly cloudy, with a low around 19.
Friday
Partly sunny, with a high near 28.
Friday Night
Mostly cloudy, with a low around 7.
Saturday
Partly sunny, with a high near 21.
Saturday Night
Mostly cloudy, with a low around 9.
Sunday
Mostly sunny, with a high near 26.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Caseyville IL
38.66°N 90.06°W (Elev. 433 ft)
38.66°N 90.06°W (Elev. 433 ft)
3:16 pm CST Dec 7, 2025
4pm CST Dec 7, 2025-6pm CST Dec 14, 2025


