Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
63°F
17°C
| Humidity | 30% |
| Wind Speed | SW 6 mph |
| Barometer | 30.00 in (1016.1 mb) |
| Dewpoint | 31°F (-1°C) |
| Visibility | 10.00 mi |
| Last update | 18 Mar 1:53 pm CDT |
Extended Forecast for
Mascoutah IL
This Afternoon
High: 64 °F
Sunny
Tonight
Low: 44 °F
Increasing
CloudsThursday
High: 72 °F
Becoming
SunnyThursday Night
Low: 47 °F
Increasing
CloudsFriday
High: 78 °F
Mostly Sunny
Friday Night
Low: 52 °F
Partly Cloudy
Saturday
High: 79 °F
Sunny
Saturday Night
Low: 57 °F
Mostly Clear
Sunday
High: 81 °F
Mostly Sunny
Detailed Forecast
This Afternoon
Sunny, with a high near 64. Southwest wind 7 to 9 mph.
Tonight
Increasing clouds, with a low around 44. Light south wind.
Thursday
Partly sunny, then gradually becoming sunny, with a high near 72. Calm wind becoming northwest around 5 mph in the afternoon.
Thursday Night
Increasing clouds, with a low around 47. Calm wind.
Friday
Mostly sunny, with a high near 78. Calm wind becoming west 5 to 8 mph in the morning.
Friday Night
Partly cloudy, with a low around 52.
Saturday
Sunny, with a high near 79.
Saturday Night
Mostly clear, with a low around 57.
Sunday
Mostly sunny, with a high near 81.
Sunday Night
Mostly cloudy, with a low around 38.
Monday
Partly sunny, with a high near 53.
Monday Night
Partly cloudy, with a low around 35.
Tuesday
Partly sunny, with a high near 59.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Mascoutah IL
38.5°N 89.81°W (Elev. 427 ft)
38.5°N 89.81°W (Elev. 427 ft)
1:26 pm CDT Mar 18, 2026
2pm CDT Mar 18, 2026-6pm CDT Mar 24, 2026
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