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.

Partly Cloudy

90°F

32°C

Humidity 70%
Wind Speed S 6 mph
Barometer 30.04 in
Dewpoint 79°F (26°C)
Visibility 10.00 mi
Heat Index106°F (41°C)
Last update 30 Jul 11:53 am CDT
Extended Forecast for

Marlborough MO

Extreme Heat Warning July 30, 01:59pm until July 30, 07:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 30, 01:59pm until July 30, 07:00pm

    NOW until 7:00pm Wed

    Extreme Heat Warning

  • This Afternoon

    High: 91 °F

    Isolated
    T-storms

  • Tonight

    Tonight: Scattered showers and thunderstorms. Mostly cloudy, with a low around 73. East wind around 5 mph becoming north after midnight. Chance of precipitation is 40%.

    Low: 73 °F

    Scattered
    Showers

  • Thursday

    Thursday: Scattered showers. Cloudy, with a high near 80. North wind 6 to 10 mph. Chance of precipitation is 40%.

    High: 80 °F

    Scattered
    Showers

  • Thursday Night

    Thursday Night: Isolated showers before 10pm. Mostly cloudy, with a low around 65. North wind 7 to 9 mph. Chance of precipitation is 20%.

    Low: 65 °F

    Isolated
    Showers then
    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 81. Northeast wind 7 to 10 mph.

    High: 81 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Isolated showers and thunderstorms. Mostly cloudy early, then becoming sunny, with a high near 91. Light and variable wind. Chance of precipitation is 20%.
Tonight
Scattered showers and thunderstorms. Mostly cloudy, with a low around 73. East wind around 5 mph becoming north after midnight. Chance of precipitation is 40%.
Thursday
Scattered showers. Cloudy, with a high near 80. North wind 6 to 10 mph. Chance of precipitation is 40%.
Thursday Night
Isolated showers before 10pm. Mostly cloudy, with a low around 65. North wind 7 to 9 mph. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 81. Northeast wind 7 to 10 mph.
Friday Night
Partly cloudy, with a low around 62.
Saturday
Sunny, with a high near 80.
Saturday Night
Partly cloudy, with a low around 61.
Sunday
Sunny, with a high near 83.
Sunday Night
Partly cloudy, with a low around 66.
Monday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marlborough MO
 38.58°N 90.35°W (Elev. 531 ft)
Last Update:
1:56 pm CDT Jul 30, 2025
Forecast Valid:
1pm CDT Jul 30, 2025-6pm CDT Aug 5, 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