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

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

90°F

32°C

Humidity 33%
Wind Speed Vrbl 5 mph
Barometer 30.05 in (1017.1 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 17 Sep 12:53 pm CDT
Extended Forecast for

Lemay MO

  • This Afternoon

    This Afternoon: Sunny, with a high near 93. Calm wind becoming northeast around 6 mph.

    High: 93 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 61. Northeast wind around 5 mph becoming calm in the evening.

    Low: 61 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 93. Light southeast wind.

    High: 93 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 68. Light and variable wind.

    Low: 68 °F

    Partly Cloudy

  • Friday

    Friday: A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 90. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 90 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.

    Low: 67 °F

    Chance
    T-storms

  • Saturday

    Saturday: A slight chance of showers and thunderstorms before 7am, then a slight chance of showers between 7am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88. Chance of precipitation is 30%.

    High: 88 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 67. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    Showers

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.

    High: 86 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 93. Calm wind becoming northeast around 6 mph.
Tonight
Clear, with a low around 61. Northeast wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 93. Light southeast wind.
Thursday Night
Partly cloudy, with a low around 68. Light and variable wind.
Friday
A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 90. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 20%.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Saturday
A slight chance of showers and thunderstorms before 7am, then a slight chance of showers between 7am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 67. Chance of precipitation is 30%.
Sunday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Monday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
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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:
12:31 pm CDT Sep 17, 2025
Forecast Valid:
1pm CDT Sep 17, 2025-6pm CDT Sep 23, 2025
 
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