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

Hazardous Weather Conditions

Current conditions at

New Orleans Naval Air Station - Alvin Callender Field (KNBG)

Lat: 29.84°NLon: 90.02°WElev: 0ft.

Mostly Cloudy

86°F

30°C

Humidity 80%
Wind Speed NW 7 mph
Barometer 30.02 in (1016.4 mb)
Dewpoint 79°F (26°C)
Visibility 10.00 mi
Heat Index100°F (38°C)
Last update 23 Aug 8:55 am CDT
Extended Forecast for

Port Sulphur LA

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

  • Today

    Today: A slight chance of showers and thunderstorms between 2pm and 4pm. Sunny, with a high near 94. Heat index values as high as 109. Northwest wind around 5 mph becoming south in the afternoon. Chance of precipitation is 20%.

    High: 94 °F

    Sunny then
    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 81. West wind around 5 mph.

    Low: 81 °F

    Mostly Clear

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Heat index values as high as 107. West wind around 5 mph becoming southwest in the afternoon.

    High: 93 °F

    Sunny then
    Chance
    T-storms

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms after 1am. Cloudy, then gradually becoming partly cloudy, with a low around 79. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.

    Low: 79 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. West wind around 5 mph becoming south in the afternoon. Chance of precipitation is 60%.

    High: 90 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 79. Southwest wind around 5 mph becoming calm.

    Low: 79 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 90. West wind around 5 mph.

    High: 90 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 78. Southwest wind around 5 mph becoming calm in the evening.

    Low: 78 °F

    Partly Cloudy
    then Chance
    T-storms

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm. Mostly sunny, with a high near 90. Calm wind becoming west around 5 mph in the morning.

    High: 90 °F

    Showers
    Likely then
    T-storms
    Likely

Detailed Forecast

Today
A slight chance of showers and thunderstorms between 2pm and 4pm. Sunny, with a high near 94. Heat index values as high as 109. Northwest wind around 5 mph becoming south in the afternoon. Chance of precipitation is 20%.
Tonight
Mostly clear, with a low around 81. West wind around 5 mph.
Monday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Heat index values as high as 107. West wind around 5 mph becoming southwest in the afternoon.
Monday Night
A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms after 1am. Cloudy, then gradually becoming partly cloudy, with a low around 79. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.
Tuesday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. West wind around 5 mph becoming south in the afternoon. Chance of precipitation is 60%.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 79. Southwest wind around 5 mph becoming calm.
Wednesday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 90. West wind around 5 mph.
Wednesday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 78. Southwest wind around 5 mph becoming calm in the evening.
Thursday
Showers likely and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm. Mostly sunny, with a high near 90. Calm wind becoming west around 5 mph in the morning.
Thursday Night
A chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 77. Southwest wind around 5 mph becoming calm.
Friday
Showers and thunderstorms likely. Mostly sunny, with a high near 90. Calm wind becoming west around 5 mph.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 77. Calm wind.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Calm wind becoming south around 5 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Port Sulphur LA
 29.48°N 89.69°W
Last Update:
1:57 am CDT Aug 23, 2026
Forecast Valid:
9am 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