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

Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Current conditions at

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

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Fair

68°F

20°C

Humidity 93%
Wind Speed Calm
Barometer 30.05 in (1016.8 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 22 Aug 11:54 pm CDT
Extended Forecast for

5 Miles SW Dardenne Prairie MO

  • Overnight

    Overnight: Mostly clear, with a low around 63. Light northwest wind.

    Low: 63 °F

    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 82. Calm wind becoming northwest 5 to 7 mph in the morning.

    High: 82 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Cloudy, then gradual clearing toward daybreak, with a low around 61. Light and variable wind.

    Low: 61 °F

    Clearing Late

  • Monday

    Monday: Sunny through mid morning, then becoming partly sunny, with a high near 82. Light southeast wind.

    High: 82 °F

    Partly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 65. Light southeast wind.

    Low: 65 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 87.

    High: 87 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 63. Light northwest wind.
Sunday
Increasing clouds, with a high near 82. Calm wind becoming northwest 5 to 7 mph in the morning.
Sunday Night
Cloudy, then gradual clearing toward daybreak, with a low around 61. Light and variable wind.
Monday
Sunny through mid morning, then becoming partly sunny, with a high near 82. Light southeast wind.
Monday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 65. Light southeast wind.
Tuesday
Mostly sunny, with a high near 85.
Tuesday Night
Partly cloudy, with a low around 68.
Wednesday
Partly sunny, with a high near 87.
Wednesday Night
Partly cloudy, with a low around 68.
Thursday
Sunny, with a high near 86.
Thursday Night
Mostly clear, with a low around 65.
Friday
Sunny, with a high near 85.
Friday Night
Partly cloudy, with a low around 67.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SW Dardenne Prairie MO
 38.7°N 90.8°W (Elev. 676 ft)
Last Update:
11:16 pm CDT Aug 22, 2026
Forecast Valid:
12am CDT Aug 23, 2026-6pm CDT Aug 29, 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