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

44°F

7°C

Humidity 49%
Wind Speed S 6 mph
Barometer 30.04 in (1017.3 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 13 Jan 1:53 am CST
Extended Forecast for

Lemay MO

  • Overnight

    Overnight: Mostly clear, with a low around 39. Southwest wind 5 to 7 mph.

    Low: 39 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 66. West wind 7 to 13 mph, with gusts as high as 24 mph.

    High: 66 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain, mainly between 7pm and 11pm. Cloudy, then gradually becoming partly cloudy, with a low around 38. West wind 7 to 13 mph, with gusts as high as 22 mph.

    Low: 38 °F

    Chance Rain

  • Wednesday

    Wednesday: Partly sunny, with a temperature rising to near 42 by 11am, then falling to around 34 during the remainder of the day. Northwest wind 13 to 17 mph, with gusts as high as 32 mph.

    High: 42 °F⇓

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 18. North wind 7 to 14 mph, with gusts as high as 24 mph.

    Low: 18 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 43.

    High: 43 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 21.

    Low: 21 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 39. Southwest wind 5 to 7 mph.
Tuesday
Increasing clouds, with a high near 66. West wind 7 to 13 mph, with gusts as high as 24 mph.
Tuesday Night
A 30 percent chance of rain, mainly between 7pm and 11pm. Cloudy, then gradually becoming partly cloudy, with a low around 38. West wind 7 to 13 mph, with gusts as high as 22 mph.
Wednesday
Partly sunny, with a temperature rising to near 42 by 11am, then falling to around 34 during the remainder of the day. Northwest wind 13 to 17 mph, with gusts as high as 32 mph.
Wednesday Night
Mostly clear, with a low around 18. North wind 7 to 14 mph, with gusts as high as 24 mph.
Thursday
Mostly sunny, with a high near 32.
Thursday Night
Mostly cloudy, with a low around 26.
Friday
Partly sunny, with a high near 43.
Friday Night
Mostly cloudy, with a low around 21.
Saturday
Partly sunny, with a high near 31.
Saturday Night
Partly cloudy, with a low around 11.
Sunday
Mostly sunny, with a high near 28.
Sunday Night
Mostly clear, with a low around 14.
M.L.King Day
Mostly sunny, with a high near 36.
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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:
12:21 am CST Jan 13, 2026
Forecast Valid:
2am CST Jan 13, 2026-6pm CST Jan 19, 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