Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

A Few Clouds

79°F

26°C

Humidity 49%
Wind Speed S 9 mph
Barometer 29.72 in (1005.9 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 17 Apr 9:53 pm CDT
Extended Forecast for

Lemay MO

Tornado Watch April 17, 10:24pm until April 17, 11:00pm
Click here for hazard details and duration
...
  •  
    Tornado Watch April 17, 10:24pm until April 17, 11:00pm

    NOW until 11:00pm Fri

    Tornado Watch

  • Tonight

    Low: 48 °F

    Severe
    Thunderstorms
    then Showers

  • Saturday

    Saturday: A 30 percent chance of showers, mainly before 8am.  Cloudy through mid morning, then gradual clearing, with a high near 60. Northwest wind around 15 mph, with gusts as high as 24 mph.

    High: 60 °F

    Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 41. Northwest wind 5 to 10 mph becoming light and variable  after midnight.

    Low: 41 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 68. Light southwest wind becoming west 6 to 11 mph in the morning. Winds could gust as high as 21 mph.

    High: 68 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 42. Northwest wind around 6 mph becoming calm  in the evening.

    Low: 42 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 52.

    Low: 52 °F

    Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

Detailed Forecast

Tonight
Showers and thunderstorms. Some of the storms could be severe. Low around 48. Southwest wind 7 to 11 mph becoming west after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 100%.
Saturday
A 30 percent chance of showers, mainly before 8am. Cloudy through mid morning, then gradual clearing, with a high near 60. Northwest wind around 15 mph, with gusts as high as 24 mph.
Saturday Night
Clear, with a low around 41. Northwest wind 5 to 10 mph becoming light and variable after midnight.
Sunday
Sunny, with a high near 68. Light southwest wind becoming west 6 to 11 mph in the morning. Winds could gust as high as 21 mph.
Sunday Night
Mostly clear, with a low around 42. Northwest wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 71.
Monday Night
Clear, with a low around 52.
Tuesday
Mostly sunny, with a high near 81.
Tuesday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 59.
Wednesday
Sunny, with a high near 83.
Wednesday Night
Mostly clear, with a low around 61.
Thursday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 85.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Friday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
Lemay MO
 38.53°N 90.29°W (Elev. 456 ft)
10:11 pm CDT Apr 17, 2026
10pm CDT Apr 17, 2026-6pm CDT Apr 24, 2026
 
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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