Grand Isle, LA Weather Forecast and Current Conditions

Current Conditions From Nearby Local Station

45°F
Feels Like 40°F  
Humidity N/A Dew Point N/A Wind NE 9 MPH Gusts 16 Barometer 30.34 in.
Report from a MADIS/MESONET weather station 2.6 mi. NE of central Grand Isle
at

Point Forecast at a Glance

MonDec 15
Mon Dec 15: Partly Cloudy, Low 54F
 
54
TueDec 16
Tue Dec 16: Mostly Sunny, High 63F, Low 59F
63
59
WedDec 17
Wed Dec 17: Showers, High 67F, Low 62F
30%
67
62
ThuDec 18
Thu Dec 18: Thunderstorms, High 69F, Low 54F
40%
69
54
FriDec 19
Fri Dec 19: Sunny, High 61F, Low 56F
61
56
SatDec 20
Sat Dec 20: Sunny, High 68F, Low 64F
68
64
SunDec 21
Sun Dec 21: Mostly Sunny, High 68F, Low 63F
68
63

Jump to detailed forecast ↓

7-Day Temperature Trend

Week Ahead Summary

High temperatures remain relatively stable through the week, ranging from 61°F to 69°F. Some rain possible with at least 2 days showing precipitation chances of 20% or higher.

Climate Context

Temperatures are expected to be near normal for this time of year, with highs around 66°F and lows around 48°F.

This Date in Weather History

1901 - An intense cold front swept across the eastern U.S. The cold front produced heavy rain in Louisiana, and heavy snow in the northeastern U.S.

More on this and other weather history

Grand Isle, LA 7 Day Weather Forecast Details

Monday Dec 15

Partly Cloudy

Night: Partly cloudy, with a temperature rising to around 54 by 4am. Northeast wind 5 to 10 mph.

Tuesday Dec 16

Mostly Sunny

Day: Mostly sunny, with a high near 63. East wind 5 to 10 mph.

Cloudy

Night: Cloudy, with a low around 59. East wind 5 to 10 mph.

Wednesday Dec 17

Showers

Day: A 30 percent chance of showers after noon. Mostly cloudy, with a high near 67. East wind around 10 mph.

Thunderstorms

Night: A chance of showers, with thunderstorms also possible after 3am. Mostly cloudy, with a low around 62. East wind around 10 mph becoming southeast after midnight. Chance of precipitation is 40%.

Thursday Dec 18

Thunderstorms

Day: A chance of showers and thunderstorms. Patchy dense fog between 8am and 1pm. Otherwise, mostly sunny, with a high near 69. Southeast wind 5 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 40%.

Showers

Night: A 30 percent chance of showers before midnight. Partly cloudy, with a low around 54. Southwest wind 5 to 15 mph becoming north after midnight.

Friday Dec 19

Sunny

Day: Sunny, with a high near 61. Northeast wind 10 to 15 mph.

Mostly Clear

Night: Mostly clear, with a low around 56. Northeast wind 5 to 10 mph becoming southeast after midnight.

Saturday Dec 20

Sunny

Day: Sunny, with a high near 68. Southeast wind 5 to 10 mph.

Partly Cloudy

Night: Partly cloudy, with a low around 64. South wind 5 to 10 mph.

Sunday Dec 21

Mostly Sunny

Day: Mostly sunny, with a high near 68. South wind around 5 mph.

Partly Cloudy

Night: Partly cloudy, with a low around 63. Southeast wind around 5 mph.

Monday Dec 22

Mostly Sunny

Day: Mostly sunny, with a high near 68. Southeast wind around 5 mph.


About Grand Isle, LA

Grand Isle is a town in Jefferson Parish in the U.S. state of Louisiana, located on a barrier island of the same name in the Gulf of Mexico. The island is at the mouth of Barataria Bay where it meets the Gulf. The town of Grand Isle is statistically part of the New Orleans−Metairie−Kenner metropolitan statistical area, though it is not connected to New Orleans' continuous urbanized area. The population was 1,005 as of the 2020 U.S. census, down from 1,296 from the previous 2010 U.S. census. Grand Isle's main street is the seaside start of Louisiana Highway 1 (LA 1), which stretches 436.2 miles (702.0 km) away to the northwest corner of the state, ending near Shreveport. LA 1's automobile causeway at the west end of the island is the only land access to or from Grand Isle. Direct access to Grand Isle's seat of parish government is 95 miles (153 km) away in the more suburban part of Jefferson Parish. Grand Isle is also the name of a former sulphur mine located 7 miles of the coast of the island, which was completed in 1960 as the first ever offshore Frasch sulphur mine.

Content from Wikipedia, licensed under CC BY-SA 3.0.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.