National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Lala Approaching Hawaii; Flash Flooding Risks; Excessive Heat

Lala, may become a hurricane, is expected to impact Hawaii this weekend. Heavy rainfall, strong winds, dangerous surf and localized flooding are expected. Heavy rainfall and flash flooding concerns from the mid-Mississippi Valley, Ohio Valley into the central Appalachians continues, with the threat shifting toward the mid-Atlantic later this weekend. Record heat continues for areas of the South. Read More >

Hazardous Weather Conditions

Current conditions at

St. Louis, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66°NLon: 90.66°WElev: 463ft.

A Few Clouds

81°F

27°C

Humidity 77%
Wind Speed SE 7 mph
Barometer 30.11 in (1018.7 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 15 Aug 9:54 am CDT
Extended Forecast for

Morse Mill MO

Extreme Heat Warning August 15, 10:30am until August 16, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning August 15, 10:30am until August 16, 09:00pm

    NOW until 9:00pm Sun

    Extreme Heat Warning

  • Today

    High: 98 °F

    Hot

  • Tonight

    Tonight: Increasing clouds, with a low around 75. Calm wind.

    Low: 75 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 97. Heat index values as high as 113. Calm wind becoming west around 5 mph in the afternoon.

    High: 97 °F

    Hot

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Light north wind. Chance of precipitation is 30%.

    Low: 71 °F

    Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 87. Light north wind.

    High: 87 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73.

    Low: 73 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
Mostly sunny and hot, with a high near 98. Heat index values as high as 111. Light and variable wind.
Tonight
Increasing clouds, with a low around 75. Calm wind.
Sunday
Mostly sunny and hot, with a high near 97. Heat index values as high as 113. Calm wind becoming west around 5 mph in the afternoon.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Light north wind. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 87. Light north wind.
Monday Night
Partly cloudy, with a low around 66.
Tuesday
Sunny, with a high near 92.
Tuesday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73.
Wednesday
A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 93. Chance of precipitation is 20%.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 67.
Thursday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63.
Friday
Mostly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Morse Mill MO
 38.28°N 90.64°W (Elev. 479 ft)
Last Update:
9:56 am CDT Aug 15, 2026
Forecast Valid:
10am CDT Aug 15, 2026-6pm CDT Aug 21, 2026
 
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