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

32°F

0°C

Humidity 32%
Wind Speed S 7 mph
Barometer 29.96 in (1014.9 mb)
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 15 Jan 3:53 pm CST
Extended Forecast for

Lemay MO

  • Tonight

    Tonight: A 30 percent chance of snow, mainly before 11pm. Partly cloudy during the early evening, then becoming cloudy, with a low around 29. South wind 5 to 8 mph becoming southwest after midnight.

    Low: 29 °F

    Chance Snow
    then Mostly
    Cloudy

  • Friday

    Friday: A chance of sprinkles between 3pm and 4pm, then a slight chance of rain after 4pm. Increasing clouds, with a high near 45. West wind 8 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 45 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Friday Night

    Friday Night: A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 22. Northwest wind 10 to 13 mph, with gusts as high as 23 mph.

    Low: 22 °F

    Chance Snow

  • Saturday

    Saturday: Partly sunny, with a high near 28. West wind 9 to 11 mph, with gusts as high as 22 mph.

    High: 28 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 12. Northwest wind 6 to 8 mph.

    Low: 12 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 31.

    High: 31 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 16.

    Low: 16 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 24.

    High: 24 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 11.

    Low: 11 °F

    Mostly Clear

Detailed Forecast

Tonight
A 30 percent chance of snow, mainly before 11pm. Partly cloudy during the early evening, then becoming cloudy, with a low around 29. South wind 5 to 8 mph becoming southwest after midnight.
Friday
A chance of sprinkles between 3pm and 4pm, then a slight chance of rain after 4pm. Increasing clouds, with a high near 45. West wind 8 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Friday Night
A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 22. Northwest wind 10 to 13 mph, with gusts as high as 23 mph.
Saturday
Partly sunny, with a high near 28. West wind 9 to 11 mph, with gusts as high as 22 mph.
Saturday Night
Mostly clear, with a low around 12. Northwest wind 6 to 8 mph.
Sunday
Mostly sunny, with a high near 31.
Sunday Night
Partly cloudy, with a low around 16.
M.L.King Day
Sunny, with a high near 24.
Monday Night
Mostly clear, with a low around 11.
Tuesday
Sunny, with a high near 37.
Tuesday Night
Mostly clear, with a low around 26.
Wednesday
Mostly sunny, with a high near 45.
Wednesday Night
Partly cloudy, with a low around 23.
Thursday
Mostly sunny, with a high near 42.
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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 Jan 15, 2026
Forecast Valid:
5pm CST Jan 15, 2026-6pm CST Jan 22, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation