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.

Fog/Mist

31°F

-1°C

Humidity 100%
Wind Speed Calm
Barometer 30.24 in (1024.1 mb)
Dewpoint 31°F (-1°C)
Visibility 0.75 mi
Last update 2 Nov 4:53 am CST
Extended Forecast for

Lemay MO

Frost Advisory November 2, 06:16am until November 2, 07:00am
Click here for hazard details and duration
...
  •  
    Frost Advisory November 2, 06:16am until November 2, 07:00am

    NOW until 7:00am Sun

    Frost Advisory

  • Today

    High: 55 °F

    Frost and
    Areas Fog
    then Sunny

  • Tonight

    Tonight: Patchy frost after 5am. Otherwise, clear, with a low around 37. Calm wind becoming south around 5 mph after midnight.

    Low: 37 °F

    Clear then
    Patchy Frost

  • Monday

    Monday: Sunny, with a high near 64. Light and variable wind becoming west around 6 mph.

    High: 64 °F

    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 41. Calm wind.

    Low: 41 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly sunny, with a high near 71. Light southeast wind becoming south 6 to 11 mph in the morning. Winds could gust as high as 22 mph.

    High: 71 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 43.

    Low: 43 °F

    Clear

Detailed Forecast

Today
Areas of fog before 9am. Widespread frost, mainly before 7am. Otherwise, sunny, with a high near 55. Light and variable wind.
Tonight
Patchy frost after 5am. Otherwise, clear, with a low around 37. Calm wind becoming south around 5 mph after midnight.
Monday
Sunny, with a high near 64. Light and variable wind becoming west around 6 mph.
Monday Night
Increasing clouds, with a low around 41. Calm wind.
Tuesday
Mostly sunny, with a high near 71. Light southeast wind becoming south 6 to 11 mph in the morning. Winds could gust as high as 22 mph.
Tuesday Night
Mostly clear, with a low around 52.
Wednesday
Sunny, with a high near 72.
Wednesday Night
Clear, with a low around 43.
Thursday
Sunny, with a high near 69.
Thursday Night
A 30 percent chance of rain after midnight. Partly cloudy, with a low around 55.
Friday
A 20 percent chance of rain. Mostly sunny, with a high near 70.
Friday Night
Partly cloudy, with a low around 48.
Saturday
A 20 percent chance of rain. Mostly sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lemay MO
 38.53°N 90.29°W (Elev. 456 ft)
Last Update:
4:51 am CST Nov 2, 2025
Forecast Valid:
6am CST Nov 2, 2025-6pm CST Nov 8, 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