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

Day	Sky	High / Low	Precip	Wind	Humidity
Wed Sep 9	Scattered Thunderstorms	-º / 80º	58%	ESE 12 mph	80%
Thu Sep 10	AM Thunderstorms View Hourly	84º / 81º	49%	SSW 7 mph	80%
12am	Scattered Thunderstorms	85º	51%	E 12 mph	76%
1am	Mostly Cloudy	85º	16%	E 11 mph	76%
2am	Mostly Cloudy	84º	16%	ESE 10 mph	77%
3am	Cloudy	83º	17%	ESE 9 mph	82%
4am	Scattered Thunderstorms	82º	41%	ESE 9 mph	83%
5am	Scattered Thunderstorms	82º	58%	SE 7 mph	83%
6am	Scattered Thunderstorms	82º	58%	SSE 6 mph	83%
7am	Scattered Thunderstorms	81º	49%	S 5 mph	84%
8am	Scattered Thunderstorms	81º	49%	SW 6 mph	87%
9am	Scattered Thunderstorms	81º	45%	SSW 6 mph	86%
10am	Mostly Cloudy	82º	23%	SW 5 mph	82%
11am	Isolated Thunderstorms	83º	31%	SSW 5 mph	81%
12pm	Scattered Thunderstorms	83º	39%	SSW 6 mph	80%
1pm	Scattered Thunderstorms	83º	38%	SSW 6 mph	79%
2pm	Cloudy	83º	13%	SSW 5 mph	78%
3pm	Mostly Cloudy	84º	16%	SSW 5 mph	76%
4pm	Mostly Cloudy	84º	7%	SSW 6 mph	74%
5pm	Mostly Cloudy	84º	7%	SSW 7 mph	76%
6pm	Partly Cloudy	84º	7%	SSW 7 mph	77%
7pm	Partly Cloudy	84º	6%	S 7 mph	77%
8pm	Partly Cloudy	83º	6%	S 7 mph	79%
9pm	Partly Cloudy	83º	10%	S 8 mph	80%
10pm	Partly Cloudy	83º	11%	S 8 mph	79%
11pm	Partly Cloudy	83º	9%	SSW 9 mph	79%
Fri Sep 11	Scattered Thunderstorms View Hourly	85º / 81º	35%	SW 11 mph	78%
12am	Mostly Cloudy	83º	19%	SSW 9 mph	79%
1am	Partly Cloudy	83º	16%	SSW 10 mph	79%
2am	Partly Cloudy	83º	20%	SSW 11 mph	80%
3am	Mostly Cloudy	83º	24%	SSW 11 mph	79%
4am	Scattered Thunderstorms	83º	55%	SSW 11 mph	80%
5am	Scattered Thunderstorms	82º	44%	SW 10 mph	81%
6am	Scattered Thunderstorms	82º	35%	SW 10 mph	81%
7am	Scattered Thunderstorms	82º	36%	SW 9 mph	82%
8am	Scattered Thunderstorms	82º	35%	SW 11 mph	82%
9am	Partly Cloudy	83º	24%	WSW 10 mph	80%
10am	Partly Cloudy	83º	19%	WSW 9 mph	80%
11am	Partly Cloudy	83º	20%	SW 8 mph	77%
12pm	Partly Cloudy	84º	17%	SW 8 mph	77%
1pm	Isolated Thunderstorms	83º	32%	SW 9 mph	78%
2pm	Isolated Thunderstorms	83º	31%	SW 9 mph	77%
3pm	Partly Cloudy	84º	16%	SW 9 mph	75%
4pm	Partly Cloudy	84º	10%	SW 9 mph	74%
5pm	Partly Cloudy	84º	14%	SW 9 mph	75%
6pm	Partly Cloudy	84º	15%	SW 9 mph	75%
7pm	Partly Cloudy	84º	10%	SW 9 mph	77%
8pm	Partly Cloudy	83º	10%	SSW 8 mph	78%
9pm	Mostly Clear	83º	10%	SSW 8 mph	78%
10pm	Partly Cloudy	83º	14%	SSW 8 mph	78%
11pm	Partly Cloudy	83º	12%	SSW 9 mph	78%
Sat Sep 12	AM Thunderstorms	85º / 81º	42%	SW 8 mph	76%
Sun Sep 13	Partly Cloudy	86º / 81º	24%	N 7 mph	75%
Mon Sep 14	AM Thunderstorms	86º / 81º	53%	NE 8 mph	74%
Tue Sep 15	Partly Cloudy	86º / 81º	24%	ENE 10 mph	73%
Wed Sep 16	Scattered Thunderstorms	85º / 81º	51%	ENE 14 mph	75%

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

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

Tonight

Low : 82ºF
E wind 5 to 15 kt becoming SE after midnight. Showers and thunderstorms likely, mainly before 1am, then showers likely and possibly a thunderstorm after 2am. Seas 1 to 2 ft.

Thursday

High : 88ºF
Variable winds 5 kt or less. Showers and thunderstorms likely before 1pm, then showers likely and possibly a thunderstorm between 1pm and 3pm, then a chance of showers and thunderstorms after 3pm. Seas around 1 ft.

Thursday Night

Low : 85ºF
S wind 5 to 10 kt. A chance of showers, with thunderstorms also possible after 1am. Seas around 1 ft.

Friday

High : 88ºF
SW wind 5 to 10 kt. Showers and possibly a thunderstorm, mainly before 1pm, then a chance of showers and thunderstorms after 1pm. Seas around 1 ft.

Friday Night

Low : 83ºF
SSW wind around 10 kt. A chance of showers, with thunderstorms also possible after 4am. Seas around 1 ft.

Saturday

High : 88ºF
SSW wind 5 to 10 kt. Showers likely and possibly a thunderstorm before 1pm, then a slight chance of showers and thunderstorms after 1pm. Seas around 1 ft.

Saturday Night

Low : 83ºF
Variable winds 5 kt or less. A chance of showers and thunderstorms after 1am. Seas around 1 ft.

Sunday

High : 88ºF
Variable winds 5 kt or less. A chance of showers and thunderstorms, mainly before 1pm. Seas around 1 ft.

Sunday Night

Low : 84ºF
SE wind 5 to 10 kt. Partly cloudy. Seas around 1 ft.

Current Weather Conditions In Southwest Pass, Mississippi River, LA

As Of: 26 minutes ago

Temperature: 85ºF
Feels Like: 95ºF

Wind Speed: 12mph
Direction: 0º (E)
Gusts: 12mph

Cloud Cover: Scattered Thunderstorms
Visibility: 7mi

Pressure: 30.02"
Humidity: 76%
Dew Point: 0ºF

The weather right now in Southwest Pass, Mississippi River, LA is Scattered Thunderstorms. The current temperature is 85°F, and the expected high and low for today, Thursday, September 10, 2026, are -° high temperature and 80°F low temperature. The wind is currently blowing at 12 miles per hour, and coming from the East. The wind is gusting to 12 mph. With the wind and the atmosphere the temperature feels like 95° Fahrenheit. Expected precipitation is 51 percent, with current humidity at 76 percent, and air pressure at 30.02 in. Visibility is 7 nautical miles. There are no current weather alert(s).