Southwest Pass, Mississippi River, LA Weather Forecast and Current Conditions

Day	Sky	High / Low	Precip	Wind	Humidity
Thu Jul 9	Thunderstorms Late Close Hourly	-º / 82º	40%	SSE 9 mph	74%
6pm	Sunny	87º	1%	S 7 mph	64%
7pm	Sunny	87º	1%	S 6 mph	66%
8pm	Mostly Clear	86º	1%	S 5 mph	69%
9pm	Partly Cloudy	84º	2%	SSE 6 mph	73%
10pm	Partly Cloudy	84º	2%	SSE 7 mph	74%
11pm	Mostly Cloudy	84º	15%	SSE 7 mph	75%
Fri Jul 10	AM Thunderstorms View Hourly	86º / 82º	43%	SSE 10 mph	77%
12am	Mostly Cloudy	84º	15%	SSE 8 mph	76%
1am	Mostly Cloudy	84º	15%	SSE 9 mph	76%
2am	Mostly Cloudy	84º	6%	SSE 8 mph	76%
3am	Cloudy	84º	7%	SSE 8 mph	76%
4am	Mostly Cloudy	84º	18%	SSE 8 mph	78%
5am	Mostly Cloudy	84º	17%	SSE 8 mph	79%
6am	Scattered Thunderstorms	83º	41%	SSE 7 mph	79%
7am	Scattered Thunderstorms	83º	41%	SSE 7 mph	81%
8am	Scattered Thunderstorms	84º	43%	SSE 7 mph	79%
9am	Scattered Thunderstorms	84º	37%	SSE 10 mph	80%
10am	Mostly Cloudy	84º	21%	SSE 9 mph	78%
11am	Mostly Cloudy	85º	24%	SSE 8 mph	78%
12pm	Cloudy	85º	15%	SSE 9 mph	76%
1pm	Mostly Cloudy	85º	21%	S 9 mph	76%
2pm	Cloudy	85º	17%	SSE 9 mph	75%
3pm	Isolated Thunderstorms	86º	32%	S 8 mph	74%
4pm	Mostly Cloudy	85º	24%	S 7 mph	76%
5pm	Mostly Cloudy	85º	15%	SSE 7 mph	74%
6pm	Mostly Cloudy	86º	6%	SSE 7 mph	73%
7pm	Partly Cloudy	85º	5%	SE 6 mph	74%
8pm	Partly Cloudy	85º	6%	SE 5 mph	76%
9pm	Mostly Cloudy	84º	9%	SE 6 mph	77%
10pm	Partly Cloudy	84º	7%	SE 8 mph	77%
11pm	Partly Cloudy	84º	14%	SE 9 mph	76%
Sat Jul 11	Partly Cloudy View Hourly	86º / 82º	15%	SSE 9 mph	75%
12am	Partly Cloudy	84º	10%	SE 10 mph	75%
1am	Partly Cloudy	84º	19%	SE 11 mph	76%
2am	Partly Cloudy	84º	22%	SE 10 mph	77%
3am	Mostly Cloudy	84º	24%	SE 10 mph	78%
4am	Partly Cloudy	84º	15%	SE 9 mph	78%
5am	Partly Cloudy	84º	9%	SE 8 mph	77%
6am	Partly Cloudy	84º	13%	SSE 7 mph	77%
7am	Partly Cloudy	83º	11%	SSE 6 mph	78%
8am	Partly Cloudy	85º	7%	SSE 7 mph	76%
9am	Mostly Sunny	85º	7%	SSE 8 mph	74%
10am	Mostly Sunny	85º	9%	SSE 8 mph	74%
11am	Mostly Sunny	86º	15%	SSE 8 mph	76%
12pm	Mostly Sunny	86º	12%	SSE 8 mph	74%
1pm	Mostly Sunny	86º	10%	SSE 7 mph	74%
2pm	Partly Cloudy	86º	7%	SSE 8 mph	74%
3pm	Partly Cloudy	85º	13%	SSE 9 mph	75%
4pm	Partly Cloudy	85º	9%	SSE 9 mph	76%
5pm	Partly Cloudy	85º	7%	SSE 9 mph	75%
Sun Jul 12	PM Thunderstorms	85º / 81º	55%	SW 9 mph	75%
Mon Jul 13	Thunderstorms	84º / 79º	79%	W 11 mph	76%
Tue Jul 14	Thunderstorms	84º / 80º	86%	WNW 9 mph	75%
Wed Jul 15	Isolated Thunderstorms	86º / 81º	33%	S 8 mph	71%
Thu Jul 16	Partly Cloudy	87º / 82º	24%	W 8 mph	69%

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

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* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for Southwest Pass, Mississippi River, LA

Tonight

Low : 86ºF
SSE wind 5 to 10 kt. Partly cloudy. Seas around 1 ft.

Friday

High : 89ºF
SSE wind 5 to 10 kt. A slight chance of showers and thunderstorms before noon. Seas 1 to 2 ft.

Friday Night

Low : 84ºF
SE wind around 10 kt. A slight chance of showers and thunderstorms after 5am. Seas around 2 ft.

Saturday

High : 89ºF
SSE wind 5 to 10 kt. A chance of showers and thunderstorms. Seas around 2 ft.

Saturday Night

Low : 83ºF
SSE wind 5 to 10 kt. A slight chance of showers and thunderstorms before 1am. Seas around 2 ft.

Sunday

High : 89ºF
Variable winds 5 kt or less. Showers and thunderstorms likely, mainly after 1pm. Seas 1 to 2 ft.

Sunday Night

Low : 80ºF
SW wind 5 to 10 kt. A chance of showers and thunderstorms, mainly after 1am. Seas around 1 ft.

Monday

High : 88ºF
W wind 5 to 10 kt. Showers and thunderstorms likely, mainly before 1pm. Seas around 1 ft.

Monday Night

Low : 80ºF
SW wind around 10 kt. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Seas 1 to 2 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

	Thursday	Friday						Saturday
Wind Speed (MPH)	7	7	8	7	9	9	7	8	10	7	8	8
	11pm	3am	7am	11am	3pm	7pm	11pm	3am	7am	11am	3pm	7pm
MPH	7	7	8	7	9	9	7	8	10	7	8	8

DIR	S	SSE	SSE	SSE	SSE	SSE	SSE	SE	SE	SSE	SSE	SSE

Current Weather Conditions In Southwest Pass, Mississippi River, LA

As Of: 20 minutes ago

Temperature: 87ºF
Feels Like: 96ºF

Wind Speed: 7mph
Direction: 0º (S)
Gusts: 7mph

Cloud Cover: Sunny
Visibility: 10mi

Pressure: 30.03"
Humidity: 64%
Dew Point: 0ºF

The weather right now in Southwest Pass, Mississippi River, LA is Sunny. The current temperature is 87°F, and the expected high and low for today, Thursday, July 9, 2026, are -° high temperature and 82°F low temperature. The wind is currently blowing at 7 miles per hour, and coming from the South. The wind is gusting to 7 mph. With the wind and the atmosphere the temperature feels like 96° Fahrenheit. Expected precipitation is 1 percent, with current humidity at 64 percent, and air pressure at 30.03 in. Visibility is 10 nautical miles. There are no current weather alert(s).