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 >

Hazardous Weather Conditions

Current conditions at

Patterson Memorial (KPTN)

Lat: 29.72°NLon: 91.33°WElev: 10ft.

Fair

84°F

29°C

Humidity 100%
Wind Speed SW 5 mph
Barometer 29.98 in (1015.1 mb)
Dewpoint 84°F (29°C)
Visibility 10.00 mi
Heat Index103°F (39°C)
Last update 22 Aug 7:56 pm CDT
Extended Forecast for

7 Miles NE Morgan City LA

Heat Advisory August 23, 11:00am until August 23, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: Mostly clear, with a low around 78. Southwest wind around 5 mph becoming calm.

    Low: 78 °F

    Mostly Clear

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms, mainly after 3pm. Sunny and hot, with a high near 99. Heat index values as high as 111. Calm wind becoming northwest around 5 mph.

    High: 99 °F

    Sunny then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 79. West wind around 5 mph becoming calm.

    Low: 79 °F

    Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: Showers and thunderstorms likely after 1pm. Mostly sunny, with a high near 95. Heat index values as high as 115. Calm wind becoming northwest around 5 mph. Chance of precipitation is 60%.

    High: 95 °F

    Sunny then
    T-storms
    Likely

  • Monday Night

    Monday Night: Partly cloudy, with a low around 78. Calm wind.

    Low: 78 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. Calm wind becoming west around 5 mph in the afternoon.

    High: 94 °F

    Sunny then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 78. Southwest wind around 5 mph becoming calm in the evening.

    Low: 78 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 95. Calm wind becoming southwest around 5 mph in the morning.

    High: 95 °F

    Sunny then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 77. Southwest wind around 5 mph becoming calm in the evening.

    Low: 77 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 78. Southwest wind around 5 mph becoming calm.
Sunday
A 40 percent chance of showers and thunderstorms, mainly after 3pm. Sunny and hot, with a high near 99. Heat index values as high as 111. Calm wind becoming northwest around 5 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 79. West wind around 5 mph becoming calm.
Monday
Showers and thunderstorms likely after 1pm. Mostly sunny, with a high near 95. Heat index values as high as 115. Calm wind becoming northwest around 5 mph. Chance of precipitation is 60%.
Monday Night
Partly cloudy, with a low around 78. Calm wind.
Tuesday
A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. Calm wind becoming west around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 78. Southwest wind around 5 mph becoming calm in the evening.
Wednesday
A 40 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 95. Calm wind becoming southwest around 5 mph in the morning.
Wednesday Night
Mostly clear, with a low around 77. Southwest wind around 5 mph becoming calm in the evening.
Thursday
Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 93. Chance of precipitation is 70%.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75.
Friday
Showers and thunderstorms likely. Mostly sunny, with a high near 92. Chance of precipitation is 60%.
Friday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75.
Saturday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles NE Morgan City LA
 29.77°N 91.12°W
Last Update:
6:45 pm CDT Aug 22, 2026
Forecast Valid:
8pm CDT Aug 22, 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