National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

42°F

6°C

Humidity 53%
Wind Speed NE 3 mph
Barometer 30.15 in (1021.2 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 2 Feb 3:53 pm CST
Extended Forecast for

Lemay MO

  • Tonight

    Tonight: A slight chance of freezing rain after 5am. Mostly cloudy, with a low around 29. Calm wind. Chance of precipitation is 20%.

    Low: 29 °F

    Mostly Cloudy
    then Slight
    Chance
    Freezing Rain

  • Tuesday

    Tuesday: A chance of snow and freezing rain before 10am, then a slight chance of drizzle or freezing rain between 10am and 11am. Mostly cloudy, with a high near 34. Calm wind becoming north 5 to 7 mph in the morning. Chance of precipitation is 30%.

    High: 34 °F

    Chance Wintry
    Mix then
    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 19. North wind around 5 mph becoming calm in the evening.

    Low: 19 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 30. Calm wind becoming north around 5 mph.

    High: 30 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 17. Calm wind.

    Low: 17 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 49.

    High: 49 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 24.

    Low: 24 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of freezing rain after 5am. Mostly cloudy, with a low around 29. Calm wind. Chance of precipitation is 20%.
Tuesday
A chance of snow and freezing rain before 10am, then a slight chance of drizzle or freezing rain between 10am and 11am. Mostly cloudy, with a high near 34. Calm wind becoming north 5 to 7 mph in the morning. Chance of precipitation is 30%.
Tuesday Night
Mostly cloudy, with a low around 19. North wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 30. Calm wind becoming north around 5 mph.
Wednesday Night
Mostly clear, with a low around 17. Calm wind.
Thursday
Mostly sunny, with a high near 42.
Thursday Night
Mostly clear, with a low around 33.
Friday
Sunny, with a high near 49.
Friday Night
Mostly clear, with a low around 24.
Saturday
Mostly sunny, with a high near 39.
Saturday Night
Partly cloudy, with a low around 26.
Sunday
Mostly sunny, with a high near 46.
Sunday Night
Partly cloudy, with a low around 27.
Monday
Mostly sunny, with a high near 50.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lemay MO
 38.53°N 90.29°W (Elev. 456 ft)
Last Update:
4:46 pm CST Feb 2, 2026
Forecast Valid:
4pm CST Feb 2, 2026-6pm CST Feb 9, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation