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

NWS St. Louis Announces Changes To May 16, 2025 Tornado Damage Assessment

After a year-long review of new ground survey data and aerial imagery, NWS St. Louis made several adjustments to the May 16, 2025 tornado damage assessment. Read More >

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

77°F

25°C

Humidity 66%
Wind Speed S 12 G 24 mph
Barometer 29.91 in (1012.3 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 17 May 9:53 am CDT
Extended Forecast for

Lemay MO

  • Today

    Today: Mostly cloudy early, then gradual clearing, with a high near 91. South wind 10 to 16 mph, with gusts as high as 26 mph.

    High: 91 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 72. South wind 10 to 14 mph, with gusts as high as 23 mph.

    Low: 72 °F

    Increasing
    Clouds

  • Monday

    Monday: A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Increasing clouds, with a high near 90. South wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.

    High: 90 °F

    Chance
    T-storms then
    Showers
    Likely

  • Monday Night

    Monday Night: Partly cloudy, with a low around 71. South wind 11 to 13 mph, with gusts as high as 24 mph.

    Low: 71 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 88. South wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 100%.

    High: 88 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 58. Chance of precipitation is 70%.

    Low: 58 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A 20 percent chance of showers. Mostly cloudy, with a high near 72.

    High: 72 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: Partly sunny, with a high near 74.

    High: 74 °F

    Partly Sunny

Detailed Forecast

Today
Mostly cloudy early, then gradual clearing, with a high near 91. South wind 10 to 16 mph, with gusts as high as 26 mph.
Tonight
Increasing clouds, with a low around 72. South wind 10 to 14 mph, with gusts as high as 23 mph.
Monday
A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Increasing clouds, with a high near 90. South wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.
Monday Night
Partly cloudy, with a low around 71. South wind 11 to 13 mph, with gusts as high as 24 mph.
Tuesday
Showers and possibly a thunderstorm. High near 88. South wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 100%.
Tuesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 58. Chance of precipitation is 70%.
Wednesday
A 20 percent chance of showers. Mostly cloudy, with a high near 72.
Wednesday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 53.
Thursday
Partly sunny, with a high near 74.
Thursday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 56.
Friday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 78.
Friday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 60.
Saturday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lemay MO
 38.53°N 90.29°W (Elev. 456 ft)
Last Update:
8:46 am CDT May 17, 2026
Forecast Valid:
10am CDT May 17, 2026-6pm CDT May 23, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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