Grand Isle, LA Climate


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United States / Louisiana / New Orleans-Metairie Metro Area / Jefferson County / Grand Isle / Zip Codes
Grand Isle, LA has a humid subtropical climate, with hot and humid summers and mild winters. Temperatures are usually in the mid-seventies during the summer months, with occasional high temperatures reaching 90 degrees Fahrenheit. Winters are milder, with temperatures typically ranging between 50 and 70 degrees Fahrenheit. The area also receives quite a bit of rainfall throughout the year, making it an ideal spot for those who enjoy warm weather and plenty of precipitation.

Grand Isle, Louisiana gets 62 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Grand Isle averages 0 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 223 sunny days per year in Grand Isle. The US average is 205 sunny days.

Grand Isle gets some kind of precipitation, on average, 100 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 89 degrees
Winter Low: the January low is 45
Rain: averages 62 inches of rain a year
Snow: averages 0 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Grand Isle is 7.0 (10=best), which means it is more comfortable than most places in Louisiana.

3.3 Summer - 8.3 Winter
April, November and March are the most pleasant months in Grand Isle, while July and August are the least comfortable months.

  ClimateGrand Isle, LouisianaUnited States
    Unlock38.1 in.
  0.0 in.  Unlock
    Unlock106.2 days
  223 days  Unlock
  89.4°85.8°
    Unlock21.7°
  7  Unlock
    Unlock4.3
  7 ft.  Unlock
Climate
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.

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. In Grand Isle, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Grand Isle are April, October and May.
In Grand Isle, there are 41.0 days annually when the high temperature is over 90°, which is one of the coolest places in Louisiana.
January has the coldest nighttime temperatures for Grand Isle with an average of 44.8°. This is one of the warmest places in Louisiana.
In Grand Isle, there are 5.7 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Louisiana.
In Grand Isle, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Louisiana.
Humidity in Grand Isle can be oppressive in the summer, but pleasant for much of the year. The humidity here has been described as stifling in August and July. The humid season extends from May-October and the most comfortable months are November-April.
July is the wettest month in Grand Isle with 7.7 inches of rain, and the driest month is November with 3.6 inches. The wettest season is Autumn with 34% of yearly precipitation and 20% occurs in Summer, which is the driest season. The annual rainfall of 61.9 inches in Grand Isle means that it is wetter than most places in Louisiana.
July is the rainiest month in Grand Isle with 12.7 days of rain, and April is the driest month with only 4.8 rainy days. There are 100.2 rainy days annually in Grand Isle, which is about average compared to other places in Louisiana. The rainiest season is Autumn when it rains 36% of the time and the driest is Summer with only a 18% chance of a rainy day.
There is rarely any recorded snowfall in Grand Isle, ranking it as one of the least snowy places in Louisiana. Any measurable snowfall is a rare occurance in Grand Isle.
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Louis  · Grand Isle, LA
Culture and Recreation
Over 16 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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Louis  · Grand Isle, LA
Cost of living.
Over 16 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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Louis  · Grand Isle, LA
Climate
Over 16 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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