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

81°F

27°C

Humidity 45%
Wind Speed S 14 G 26 mph
Barometer 29.86 in (1011.0 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 30 Mar 5:53 pm CDT
Extended Forecast for

Lemay MO

  • Tonight

    Tonight: Partly cloudy, with a low around 64. South wind 10 to 13 mph, with gusts as high as 24 mph.

    Low: 64 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers before 1pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 86. Southwest wind 10 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

    High: 86 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 1am, then showers likely between 1am and 2am, then rain likely after 2am. Mostly cloudy, with a low around 61. South wind 6 to 8 mph. Chance of precipitation is 60%.

    Low: 61 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: Rain, with thunderstorms also possible after 4pm. High near 76. South wind 6 to 9 mph. Chance of precipitation is 80%.

    High: 76 °F

    Rain

  • Wednesday Night

    Wednesday Night: A chance of rain and thunderstorms before 1am, then a chance of rain between 1am and 4am, then a chance of rain and thunderstorms after 4am. Mostly cloudy, with a low around 64. Southeast wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

    Low: 64 °F

    Chance Rain

  • Thursday

    Thursday: Rain and possibly a thunderstorm. High near 80. Chance of precipitation is 80%.

    High: 80 °F

    Rain

  • Thursday Night

    Thursday Night: Rain and possibly a thunderstorm before 1am, then rain likely. Low around 60. Chance of precipitation is 80%.

    Low: 60 °F

    Rain

  • Friday

    Friday: A chance of rain, with thunderstorms also possible after 1pm. Partly sunny, with a high near 82. Chance of precipitation is 50%.

    High: 82 °F

    Chance Rain

  • Friday Night

    Friday Night: A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.

    Low: 59 °F

    Chance
    T-storms then
    Rain Likely

Detailed Forecast

Tonight
Partly cloudy, with a low around 64. South wind 10 to 13 mph, with gusts as high as 24 mph.
Tuesday
A slight chance of showers before 1pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 86. Southwest wind 10 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
Tuesday Night
A chance of showers and thunderstorms before 1am, then showers likely between 1am and 2am, then rain likely after 2am. Mostly cloudy, with a low around 61. South wind 6 to 8 mph. Chance of precipitation is 60%.
Wednesday
Rain, with thunderstorms also possible after 4pm. High near 76. South wind 6 to 9 mph. Chance of precipitation is 80%.
Wednesday Night
A chance of rain and thunderstorms before 1am, then a chance of rain between 1am and 4am, then a chance of rain and thunderstorms after 4am. Mostly cloudy, with a low around 64. Southeast wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Thursday
Rain and possibly a thunderstorm. High near 80. Chance of precipitation is 80%.
Thursday Night
Rain and possibly a thunderstorm before 1am, then rain likely. Low around 60. Chance of precipitation is 80%.
Friday
A chance of rain, with thunderstorms also possible after 1pm. Partly sunny, with a high near 82. Chance of precipitation is 50%.
Friday Night
A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.
Saturday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 70. Chance of precipitation is 60%.
Saturday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 42.
Sunday
A 20 percent chance of rain. Mostly sunny, with a high near 60.
Sunday Night
Mostly clear, with a low around 39.
Monday
Sunny, with a high near 65.
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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:
6:06 pm CDT Mar 30, 2026
Forecast Valid:
6pm CDT Mar 30, 2026-6pm CDT Apr 6, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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