Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

87°F

31°C

Humidity 34%
Wind Speed SW 9 G 17 mph
Barometer 29.90 in (1012.1 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 7 Oct 1:53 pm CDT
Extended Forecast for

2 Miles E O'Fallon IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 89. West wind around 10 mph.

    High: 89 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 57. West wind around 6 mph becoming calm  in the evening.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 84. Light north wind.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 58. Light and variable wind.

    Low: 58 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 89. Light southeast wind becoming south 5 to 10 mph in the morning.

    High: 89 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of showers, mainly before 1am.  Mostly cloudy, with a low around 58.

    Low: 58 °F

    Chance
    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 78.

    High: 78 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 89. West wind around 10 mph.
Tonight
Mostly clear, with a low around 57. West wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 84. Light north wind.
Thursday Night
Clear, with a low around 58. Light and variable wind.
Friday
Sunny, with a high near 89. Light southeast wind becoming south 5 to 10 mph in the morning.
Friday Night
Mostly clear, with a low around 61.
Saturday
Mostly sunny, with a high near 86.
Saturday Night
A 40 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 58.
Sunday
Partly sunny, with a high near 78.
Sunday Night
Partly cloudy, with a low around 59.
Columbus Day
Mostly sunny, with a high near 89.
Monday Night
Mostly clear, with a low around 58.
Tuesday
Mostly sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles E O'Fallon IL
 38.59°N 89.86°W (Elev. 499 ft)
1:26 pm CDT Oct 7, 2026
2pm CDT Oct 7, 2026-6pm CDT Oct 13, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database