Grand Isle, LA Weather


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The most pleasant months of the year for Grand Isle are April, October and May. In Grand Isle, there are 5 comfortable months with high temperatures in the range of 70-85°. August is the hottest month for Grand Isle with an average high temperature of 89.6°, which ranks it as one of the coolest places in Louisiana. Any measurable snowfall is a rare occurance in Grand Isle. The humidity here has been described as stifling in August and July.

Today's Weather - Grand Isle, LA

3 AM PST

Mostly Clear

69°F

7 DAY FORECASTDESCRIPTIONHIGH/LOWWIND
OvernightMostly Clear68° / 75°N 0 mph
Wednesday NightMostly Clear70° / 75°SE 5 mph
Thursday NightPartly Cloudy71° / 77°SE 10 to 15 mph
Friday NightMostly Cloudy73° / 78°SE 15 to 25 mph
Saturday NightPartly Cloudy73° / 78°SE 20 to 25 mph
Sunday NightPartly Cloudy73° / 78°SE 20 mph
Monday NightSlight Chance Showers And Thunderstorms72° / 78°SE 15 mph

Average Monthly High and Low (°F)
HighLow
January62° 45°
February66° 48°
March71° 54°
April77° 61°
May83° 69°
June88° 74°
July89° 76°
August90° 76°
September87° 73°
October79° 64°
November72° 55°
December65° 48°
Hot, Freezing, Rainy, Snowy Days: Grand Isle
Hot
Days
Freezing
Days
Rainy
Days
Snowy
Days
January0390
February0180
March0070
April0050
May1060
June70110
July140130
August140120
September5090
October0070
November0060
December0280

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

Reviews for Grand Isle
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Over 15 years ago

The early settlers dating back to 1781 were of French, Spanish, and Italian heritage. The salt water fishing is outstanding, and during the Spring and Summer,  More

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Over 15 years ago

The cost of living on Grand Isle is pricey, and that includes housing, homeowner's insurance, flood insurance, food, and rent if you cannot afford to  More

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Over 15 years ago

Winters are fairly mild with occasional dips into the 30's. Spring & Fall are usually pretty comfortable ( 60's & 70's ), while summer is sub-tropical with temps  More

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