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

Patterson Memorial (KPTN)

Lat: 29.72°NLon: 91.33°WElev: 10ft.

Overcast

93°F

34°C

Humidity 68%
Wind Speed W 7 mph
Barometer 30.04 in (1017.4 mb)
Dewpoint 81°F (27°C)
Visibility 10.00 mi
Heat Index114°F (46°C)
Last update 21 Aug 1:56 pm CDT
Extended Forecast for

3 Miles ESE Morgan City LA

Heat Advisory August 22, 11:00am until August 22, 08:00pm
Heat Advisory August 21, 02:49pm until August 21, 08:00pm
Click here for hazard details and duration
Heat Advisory
Heat Advisory
  •  
    Heat Advisory August 21, 02:49pm until August 21, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • This Afternoon

    High: 95 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly before midnight.  Partly cloudy, with a low around 79. Northeast wind 15 to 20 mph becoming light and variable  after midnight.

    Low: 79 °F

    Chance
    T-storms

  • Saturday

    Saturday: Sunny, with a high near 96. Heat index values as high as 110. Light and variable wind becoming northwest 5 to 10 mph in the afternoon.

    High: 96 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 79. Southwest wind around 5 mph.

    Low: 79 °F

    Mostly Clear

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after 1pm.  Sunny and hot, with a high near 97. Calm wind becoming northwest around 5 mph.

    High: 97 °F

    Sunny then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 79. Southwest wind around 5 mph becoming calm.

    Low: 79 °F

    Mostly Clear

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms after 1pm.  Sunny, with a high near 94. Calm wind becoming west around 5 mph.

    High: 94 °F

    Sunny then
    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 79. Calm wind.

    Low: 79 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 95. Heat index values as high as 112. Southwest wind 5 to 15 mph.
Tonight
A 40 percent chance of showers and thunderstorms, mainly before midnight. Partly cloudy, with a low around 79. Northeast wind 15 to 20 mph becoming light and variable after midnight.
Saturday
Sunny, with a high near 96. Heat index values as high as 110. Light and variable wind becoming northwest 5 to 10 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 79. Southwest wind around 5 mph.
Sunday
A 30 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 97. Calm wind becoming northwest around 5 mph.
Sunday Night
Mostly clear, with a low around 79. Southwest wind around 5 mph becoming calm.
Monday
A 40 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. Calm wind becoming west around 5 mph.
Monday Night
Partly cloudy, with a low around 79. Calm wind.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Sunny, with a high near 93. Calm wind becoming southwest around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 78.
Wednesday
A 40 percent chance of showers and thunderstorms. Sunny, with a high near 93.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 78.
Thursday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Morgan City LA
 29.68°N 91.15°W
2:46 pm CDT Aug 21, 2026
2pm CDT Aug 21, 2026-6pm CDT Aug 27, 2026
 
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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