Southwest Pass, Mississippi River, LA Weather Forecast and Current Conditions
| Day | Sky | High / Low | Precip | Wind | Humidity | |
|---|---|---|---|---|---|---|
|
Thu Aug 20 |
 |
Partly Cloudy Close Hourly |
-º / 83º | 13% | W 10 mph | 73% |
| 8pm |  |
Mostly Clear | 86º | 1% | WSW 9 mph | 69% |
| 9pm | |
Mostly Clear | 86º | 1% | WSW 9 mph | 71% |
| 10pm | |
Partly Cloudy | 86º | 1% | WSW 9 mph | 71% |
| 11pm | |
Partly Cloudy | 85º | 2% | WSW 8 mph | 73% |
|
Fri Aug 21 |
 |
AM Showers View Hourly |
87º / 82º | 41% | WNW 11 mph | 74% |
| 12am | |
Partly Cloudy | 85º | 4% | W 9 mph | 74% |
| 1am | |
Partly Cloudy | 85º | 4% | W 9 mph | 74% |
| 2am | |
Partly Cloudy | 85º | 4% | W 9 mph | 74% |
| 3am | |
Partly Cloudy | 85º | 5% | W 10 mph | 75% |
| 4am | |
Partly Cloudy | 85º | 13% | W 10 mph | 74% |
| 5am | |
Partly Cloudy | 85º | 12% | WNW 10 mph | 76% |
| 6am | |
Partly Cloudy | 85º | 8% | WNW 10 mph | 74% |
| 7am |  |
Partly Cloudy | 84º | 24% | WNW 10 mph | 77% |
| 8am |  |
Showers | 86º | 36% | NW 10 mph | 77% |
| 9am | |
Few Showers | 86º | 32% | NW 11 mph | 76% |
| 10am |  |
Mostly Cloudy | 85º | 24% | NW 10 mph | 76% |
| 11am | |
Mostly Cloudy | 85º | 24% | NW 8 mph | 77% |
| 12pm | |
Showers | 85º | 42% | WNW 10 mph | 76% |
| 1pm | |
Mostly Cloudy | 86º | 24% | W 7 mph | 73% |
| 2pm | |
Mostly Cloudy | 86º | 24% | W 8 mph | 73% |
| 3pm | |
Mostly Cloudy | 87º | 17% | WSW 9 mph | 72% |
| 4pm | |
Mostly Cloudy | 87º | 17% | W 9 mph | 70% |
| 5pm | |
Mostly Cloudy | 86º | 22% | WSW 9 mph | 72% |
| 6pm | |
Few Showers | 86º | 31% | WSW 10 mph | 73% |
| 7pm | |
Partly Cloudy | 85º | 24% | W 10 mph | 72% |
| 8pm | |
Partly Cloudy | 84º | 10% | W 8 mph | 76% |
| 9pm | |
Partly Cloudy | 85º | 10% | W 9 mph | 77% |
| 10pm |  |
Mostly Cloudy | 84º | 6% | WNW 9 mph | 77% |
| 11pm | |
Mostly Cloudy | 84º | 6% | W 9 mph | 78% |
|
Sat Aug 22 |
|
Partly Cloudy View Hourly |
88º / 84º | 24% | WNW 12 mph | 76% |
| 12am | |
Partly Cloudy | 84º | 11% | W 9 mph | 78% |
| 1am | |
Partly Cloudy | 84º | 15% | W 7 mph | 76% |
| 2am | |
Partly Cloudy | 84º | 11% | W 9 mph | 77% |
| 3am | |
Partly Cloudy | 85º | 11% | W 9 mph | 76% |
| 4am | |
Partly Cloudy | 84º | 19% | WNW 9 mph | 77% |
| 5am | |
Partly Cloudy | 84º | 19% | WNW 9 mph | 77% |
| 6am | |
Partly Cloudy | 84º | 21% | WNW 10 mph | 77% |
| 7am |  |
Scattered Thunderstorms | 83º | 38% | NW 10 mph | 80% |
| 8am | |
Partly Cloudy | 84º | 17% | NW 11 mph | 80% |
| 9am | |
Partly Cloudy | 84º | 22% | NW 12 mph | 79% |
| 10am | |
Partly Cloudy | 84º | 22% | NW 11 mph | 79% |
| 11am | |
Partly Cloudy | 85º | 22% | NW 10 mph | 78% |
| 12pm | |
Partly Cloudy | 85º | 8% | WNW 9 mph | 77% |
| 1pm | |
Partly Cloudy | 86º | 5% | WNW 9 mph | 74% |
| 2pm | |
Partly Cloudy | 86º | 5% | W 9 mph | 74% |
| 3pm | |
Partly Cloudy | 87º | 4% | W 10 mph | 72% |
| 4pm | |
Partly Cloudy | 87º | 4% | W 9 mph | 71% |
| 5pm | |
Mostly Cloudy | 87º | 23% | W 9 mph | 73% |
| 6pm | |
Partly Cloudy | 87º | 5% | W 10 mph | 73% |
| 7pm | |
Partly Cloudy | 86º | 5% | W 9 mph | 75% |
|
Sun Aug 23 |
 |
Sunny | 89º / 83º | 16% | NW 8 mph | 73% |
|
Mon Aug 24 |
|
Partly Cloudy | 88º / 82º | 19% | W 6 mph | 71% |
|
Tue Aug 25 |
|
AM Thunderstorms | 87º / 82º | 35% | ESE 8 mph | 70% |
|
Wed Aug 26 |
 |
Mostly Sunny | 88º / 82º | 24% | SW 8 mph | 68% |
|
Thu Aug 27 |
|
AM Thunderstorms | 87º / 81º | 38% | WSW 7 mph | 70% |
-
Buoy Data
For Southwest Pass, Mississippi River, LA -
Wind Forecast
In Southwest Pass, Mississippi River, LA -
Radar
In Southwest Pass, Mississippi River, LA -
Marine Forecast
In Southwest Pass, Mississippi River, LA
Weather Radar for Southwest Pass, Mississippi River, LA See Radar
* Playback displays weather for the past 6 hours.
NOAA Weather Marine Forecast for Southwest Pass, Mississippi River, LA
Tonight
Low : 85ºF
W wind around 10 kt. Partly cloudy. Seas around 1 ft.
W wind around 10 kt. Partly cloudy. Seas around 1 ft.
Friday
High : 90ºF
WNW wind 5 to 10 kt becoming WSW in the afternoon. A chance of showers and thunderstorms, mainly before noon. Seas around 1 ft.
WNW wind 5 to 10 kt becoming WSW in the afternoon. A chance of showers and thunderstorms, mainly before noon. Seas around 1 ft.
Friday Night
Low : 87ºF
W wind around 10 kt. A slight chance of showers and thunderstorms between 11pm and midnight. Seas around 1 ft.
W wind around 10 kt. A slight chance of showers and thunderstorms between 11pm and midnight. Seas around 1 ft.
Saturday
High : 90ºF
WNW wind around 10 kt. A chance of showers and thunderstorms, mainly before 1pm. Seas around 1 ft.
WNW wind around 10 kt. A chance of showers and thunderstorms, mainly before 1pm. Seas around 1 ft.
Saturday Night
Low : 85ºF
W wind around 10 kt. Partly cloudy. Seas around 1 ft.
W wind around 10 kt. Partly cloudy. Seas around 1 ft.
Sunday
High : 91ºF
NW wind 5 to 10 kt becoming W in the afternoon. Sunny. Seas around 1 ft.
NW wind 5 to 10 kt becoming W in the afternoon. Sunny. Seas around 1 ft.
Sunday Night
Low : 85ºF
Variable winds 5 kt or less. A slight chance of showers and thunderstorms after 1am. Seas around 1 ft.
Variable winds 5 kt or less. A slight chance of showers and thunderstorms after 1am. Seas around 1 ft.
Monday
High : 90ºF
Variable winds 5 kt or less. A slight chance of showers and thunderstorms. Seas around 1 ft.
Variable winds 5 kt or less. A slight chance of showers and thunderstorms. Seas around 1 ft.
Monday Night
Low : 84ºF
Variable winds 5 kt or less. A slight chance of showers and thunderstorms after 1am. Seas around 1 ft.
Variable winds 5 kt or less. A slight chance of showers and thunderstorms after 1am. Seas around 1 ft.
NOAA Buoy Data Near Southwest Pass, Mississippi River, LA See Map
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Wind Speed Forecast for Southwest Pass, Mississippi River, LA
| Friday | Saturday | |||||||||||
| Wind Speed (MPH) | 9 | 9 | 10 | 10 | 10 | 9 | 8 | 9 | 9 | 11 | 9 | 9 |
| 1am | 5am | 9am | 1pm | 5pm | 9pm | 1am | 5am | 9am | 1pm | 5pm | 9pm | |
| MPH | 9 | 9 | 10 | 10 | 10 | 9 | 8 | 9 | 9 | 11 | 9 | 9 |
| DIR | WSW | W | W | NW | WNW | W | W | W | WNW | NW | WNW | W |
Current Weather Conditions In Southwest Pass, Mississippi River, LA
As Of: 40 minutes ago
- 86ºF
- 96ºF
- 9mph
- 0º (WSW)
- 9mph
- Mostly Clear
- 10mi
- 29.99"
- 69%
- 0ºF
The weather right now in Southwest Pass, Mississippi River, LA is Mostly Clear. The current temperature is 86°F, and the expected high and low for today, Thursday, August 20, 2026, are -° high temperature and 83°F low temperature. The wind is currently blowing at 9 miles per hour, and coming from the West Southwest. The wind is gusting to 9 mph. With the wind and the atmosphere the temperature feels like 96° Fahrenheit. Expected precipitation is 1 percent, with current humidity at 69 percent, and air pressure at 29.99 in. Visibility is 10 nautical miles. There are no current weather alert(s).
