Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
53°F
12°C
| Humidity | 55% |
| Wind Speed | Calm |
| Barometer | 30.05 in (1017.7 mb) |
| Dewpoint | 37°F (3°C) |
| Visibility | 10.00 mi |
| Last update | 18 Mar 9:53 pm CDT |
Extended Forecast for
Mascoutah IL
Tonight
Low: 44 °F
Mostly Cloudy
Thursday
High: 74 °F
Becoming
SunnyThursday Night
Low: 49 °F
Mostly Clear
Friday
High: 80 °F
Sunny
Friday Night
Low: 51 °F
Partly Cloudy
Saturday
High: 79 °F
Sunny
Saturday Night
Low: 57 °F
Mostly Clear
Sunday
High: 81 °F
Mostly Sunny
Sunday Night
Low: 38 °F
Mostly Cloudy
Detailed Forecast
Tonight
Mostly cloudy, with a low around 44. Light south wind.
Thursday
Mostly cloudy through mid morning, then gradual clearing, with a high near 74. Calm wind becoming south around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 49. South wind 3 to 5 mph.
Friday
Sunny, with a high near 80. Southwest wind 3 to 8 mph.
Friday Night
Partly cloudy, with a low around 51. Southwest wind 3 to 6 mph.
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 34.
Tuesday
Partly sunny, with a high near 59.
Tuesday Night
Partly cloudy, with a low around 41.
Wednesday
Partly sunny, with a high near 67.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Mascoutah IL
38.5°N 89.78°W (Elev. 440 ft)
38.5°N 89.78°W (Elev. 440 ft)
10:21 pm CDT Mar 18, 2026
10pm CDT Mar 18, 2026-6pm CDT Mar 25, 2026
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