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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Lemay MO

  • This Afternoon

    This Afternoon: Scattered showers and thunderstorms, mainly between 4pm and 5pm. Cloudy, with a high near 55. Southeast wind around 6 mph becoming light and variable. Chance of precipitation is 30%.

    High: 55 °F

    Scattered
    Showers

  • Tonight

    Tonight: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4am. Patchy fog after 9pm. Low around 50. Northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.

    Low: 50 °F

    Showers and
    Patchy Fog

  • Wednesday

    Wednesday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2pm. Patchy fog before 11am. High near 64. Calm wind becoming south around 5 mph. Chance of precipitation is 90%.

    High: 64 °F

    Showers
    Likely and
    Patchy Fog
    then Showers

  • Wednesday Night

    Wednesday Night: Showers, with thunderstorms also possible after 9pm. Low around 54. South wind 3 to 5 mph. Chance of precipitation is 100%.

    Low: 54 °F

    Showers

  • Thursday

    Thursday: Rain likely, mainly before noon. Mostly cloudy, with a high near 70. West wind 3 to 7 mph. Chance of precipitation is 60%.

    High: 70 °F

    Rain Likely
    then Chance
    Rain

  • Thursday Night

    Thursday Night: A chance of rain before 9pm, then a chance of rain and thunderstorms between 9pm and midnight, then rain likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.

    Low: 59 °F

    Rain Likely

  • Friday

    Friday: A chance of rain and thunderstorms before noon, then a slight chance of rain between noon and 3pm, then a slight chance of rain and thunderstorms after 3pm. Partly sunny, with a high near 80. Chance of precipitation is 40%.

    High: 80 °F

    Chance Rain
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of rain and thunderstorms, then rain and possibly a thunderstorm after midnight. Low around 59. Chance of precipitation is 90%.

    Low: 59 °F

    Chance
    T-storms then
    Rain

  • Saturday

    Saturday: A 50 percent chance of rain, mainly before noon. Partly sunny, with a high near 69.

    High: 69 °F

    Chance Rain
    then Slight
    Chance Rain

Detailed Forecast

This Afternoon
Scattered showers and thunderstorms, mainly between 4pm and 5pm. Cloudy, with a high near 55. Southeast wind around 6 mph becoming light and variable. Chance of precipitation is 30%.
Tonight
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4am. Patchy fog after 9pm. Low around 50. Northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.
Wednesday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2pm. Patchy fog before 11am. High near 64. Calm wind becoming south around 5 mph. Chance of precipitation is 90%.
Wednesday Night
Showers, with thunderstorms also possible after 9pm. Low around 54. South wind 3 to 5 mph. Chance of precipitation is 100%.
Thursday
Rain likely, mainly before noon. Mostly cloudy, with a high near 70. West wind 3 to 7 mph. Chance of precipitation is 60%.
Thursday Night
A chance of rain before 9pm, then a chance of rain and thunderstorms between 9pm and midnight, then rain likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.
Friday
A chance of rain and thunderstorms before noon, then a slight chance of rain between noon and 3pm, then a slight chance of rain and thunderstorms after 3pm. Partly sunny, with a high near 80. Chance of precipitation is 40%.
Friday Night
A chance of rain and thunderstorms, then rain and possibly a thunderstorm after midnight. Low around 59. Chance of precipitation is 90%.
Saturday
A 50 percent chance of rain, mainly before noon. Partly sunny, with a high near 69.
Saturday Night
Partly cloudy, with a low around 44.
Sunday
Sunny, with a high near 70.
Sunday Night
Partly cloudy, with a low around 48.
Monday
Sunny, with a high near 77.
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ABOUT THIS FORECAST

 
Point Forecast:
Lemay MO
 38.53°N 90.29°W (Elev. 456 ft)
Last Update:
12:26 pm CST Mar 3, 2026
Forecast Valid:
12pm CST Mar 3, 2026-6pm CDT Mar 9, 2026
 
Forecast Discussion
 
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Additional Resources

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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