Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

54°F

12°C

Humidity 57%
Wind Speed N 5 mph
Barometer 30.57 in (1035.1 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill53°F (12°C)
Last update 17 Oct 11:53 am CDT
Extended Forecast for

3 Miles SSW Smithton IL

Frost Advisory October 18, 01:00am until October 18, 09:00am
Click here for hazard details and duration
Frost Advisory
  • This Afternoon

    This Afternoon: Sunny, with a high near 60. North wind 3 to 5 mph.

    High: 60 °F

    Sunny

  • Tonight

    Tonight: Patchy frost after 4am.  Otherwise, clear, with a low around 36. Calm wind.

    Low: 36 °F

    Clear then
    Patchy Frost

  • Sunday

    Sunday: Patchy frost before 9am.  Otherwise, sunny, with a high near 69. Calm wind becoming south around 6 mph in the afternoon.

    High: 69 °F

    Patchy Frost
    then Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 37. Calm wind.

    Low: 37 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 71. Calm wind.

    High: 71 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 60. North wind 3 to 5 mph.
Tonight
Patchy frost after 4am. Otherwise, clear, with a low around 36. Calm wind.
Sunday
Patchy frost before 9am. Otherwise, sunny, with a high near 69. Calm wind becoming south around 6 mph in the afternoon.
Sunday Night
Clear, with a low around 37. Calm wind.
Monday
Sunny, with a high near 71. Calm wind.
Monday Night
Mostly clear, with a low around 40.
Tuesday
Sunny, with a high near 75.
Tuesday Night
Mostly clear, with a low around 43.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Clear, with a low around 46.
Thursday
Sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 50.
Friday
Sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Smithton IL
 38.37°N 90.02°W (Elev. 492 ft)
11:51 am CDT Oct 17, 2026
12pm CDT Oct 17, 2026-6pm CDT Oct 23, 2026
 
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Additional Resources

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