Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Fair
82°F
28°C
| Humidity | 27% |
| Wind Speed | Calm |
| Barometer | 30.10 in (1019.0 mb) |
| Dewpoint | 45°F (7°C) |
| Visibility | 10.00 mi |
| Heat Index | 80°F (27°C) |
| Last update | 8 Oct 12:53 pm CDT |
Extended Forecast for
3 Miles SE Mascoutah IL
This Afternoon
High: 86 °F
Sunny
Tonight
Low: 50 °F
Clear
Friday
High: 89 °F
Sunny
Friday Night
Low: 59 °F
Mostly Clear
Saturday
High: 82 °F
Mostly Sunny
then Slight
Chance RainSaturday Night
Low: 60 °F
Chance Rain
Sunday
High: 79 °F
Slight Chance
RainSunday Night
Low: 58 °F
Mostly Clear
Columbus Day
High: 90 °F
Sunny
Detailed Forecast
This Afternoon
Sunny, with a high near 86. Calm wind.
Tonight
Clear, with a low around 50. Calm wind.
Friday
Sunny, with a high near 89. Calm wind becoming south 5 to 9 mph in the morning.
Friday Night
Mostly clear, with a low around 59. Southeast wind 3 to 6 mph.
Saturday
A 20 percent chance of rain after 4pm. Partly sunny, with a high near 82. Calm wind becoming southeast 5 to 9 mph in the morning.
Saturday Night
A 50 percent chance of rain, mainly after 7pm. Mostly cloudy, with a low around 60.
Sunday
A 20 percent chance of rain before 1pm. Partly sunny, with a high near 79.
Sunday Night
Mostly clear, with a low around 58.
Columbus Day
Sunny, with a high near 90.
Monday Night
Mostly clear, with a low around 65.
Tuesday
Sunny, with a high near 86.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 59.
Wednesday
A 20 percent chance of showers. Mostly sunny, with a high near 81.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
3 Miles SE Mascoutah IL
38.47°N 89.76°W (Elev. 423 ft)
38.47°N 89.76°W (Elev. 423 ft)
1:26 pm CDT Oct 8, 2026
1pm CDT Oct 8, 2026-6pm CDT Oct 14, 2026
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