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.

Thunderstorm

93°F

34°C

Humidity 52%
Wind Speed SE 5 mph
Barometer 30.05 in (1017.1 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index102°F (39°C)
Last update 16 Aug 2:53 pm CDT
Extended Forecast for

Mapaville MO

Heat Advisory August 16, 03:06pm until August 18, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 16, 03:06pm until August 18, 08:00pm

    NOW until 8:00pm Mon

    Heat Advisory

  • This Afternoon

    High: 98 °F

    Isolated
    T-storms

  • Tonight

    Tonight: Isolated showers and thunderstorms before 9pm. Partly cloudy, with a low around 73. Light and variable wind. Chance of precipitation is 20%.

    Low: 73 °F

    Isolated
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Scattered showers and thunderstorms, mainly after 4pm. Mostly sunny and hot, with a high near 98. Heat index values as high as 109. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 30%.

    High: 98 °F

    Sunny then
    Scattered
    T-storms

  • Sunday Night

    Sunday Night: Scattered showers and thunderstorms before 10pm. Partly cloudy, with a low around 73. Calm wind. Chance of precipitation is 30%.

    Low: 73 °F

    Scattered
    T-storms then
    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 98. Calm wind.

    High: 98 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 97.

    High: 97 °F

    Sunny then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.

    Low: 71 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Isolated showers and thunderstorms. Mostly sunny and hot, with a high near 98. Heat index values as high as 106. Light south wind. Chance of precipitation is 20%.
Tonight
Isolated showers and thunderstorms before 9pm. Partly cloudy, with a low around 73. Light and variable wind. Chance of precipitation is 20%.
Sunday
Scattered showers and thunderstorms, mainly after 4pm. Mostly sunny and hot, with a high near 98. Heat index values as high as 109. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 30%.
Sunday Night
Scattered showers and thunderstorms before 10pm. Partly cloudy, with a low around 73. Calm wind. Chance of precipitation is 30%.
Monday
Sunny and hot, with a high near 98. Calm wind.
Monday Night
Mostly clear, with a low around 74.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 97.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 85.
Wednesday Night
Partly cloudy, with a low around 66.
Thursday
Mostly sunny, with a high near 84.
Thursday Night
Mostly clear, with a low around 65.
Friday
Sunny, with a high near 88.
Friday Night
Mostly clear, with a low around 64.
Saturday
Sunny, with a high near 91.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mapaville MO
 38.25°N 90.47°W (Elev. 525 ft)
Last Update:
2:36 pm CDT Aug 16, 2025
Forecast Valid:
3pm CDT Aug 16, 2025-6pm CDT Aug 23, 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