As of 10:59 CDT

Grand Isle, LA weather in May

84°

Grand Isle, Sunday, 9 August, 10:59

Overcast. Feels like 92°. High 85°, low 82°.

Pressure30.09 inHg

Wind7.9 mph E

Humidity73%

Visibility6.2 mi

Dew point74°

See detailed hourly forecast

In May, Grand Isle, LA averages a high of 77.7° and a low of 74.4°. About 3.0 inches of precipitation fall over the month (8 wet days). The record high is 85.8° (2012) and the record low 56.7° (2013). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	74.5°	71.4°	22%	79.2° (2002)	62.4° (2014)
2	74.8°	72°	23%	79.9° (2002)	64.9° (1960)
3	75°	71.4°	30%	79.7° (2002)	59° (2013)
4	74.8°	71.2°	23%	79.7° (2002)	56.7° (2013)
5	75.2°	72°	18%	80.2° (2022)	62.1° (2013)
6	75.7°	72.3°	20%	81.3° (1989)	59.5° (2013)
7	76.1°	73°	23%	81° (2018)	61.7° (1992)
8	76.3°	73.2°	33%	81° (2018)	62.8° (1992)
9	76.6°	73.4°	28%	80.8° (2022)	64.8° (1961)
10	76.6°	73.8°	23%	80.8° (2024)	61.9° (1961)
11	76.8°	73.8°	28%	82.4° (2008)	64.2° (1981)
12	77°	73.8°	28%	82.6° (2022)	58.5° (1960)
13	77.4°	74.1°	23%	81.3° (2002)	61.9° (1960)
14	77.5°	74.3°	22%	83.3° (2018)	66.6° (2002)
15	77.5°	73.9°	25%	82.4° (2018)	59.7° (2014)
16	77.5°	74.1°	35%	84.6° (2018)	67.5° (1983)
17	77.9°	74.5°	30%	84° (2018)	62.4° (2011)
18	78.1°	74.7°	37%	82.8° (1998)	66.9° (2009)
19	78.1°	75°	23%	83.7° (1962)	62.6° (2002)
20	78.3°	75.2°	17%	83.8° (2023)	66.4° (2002)
21	78.4°	75.4°	33%	84.6° (2005)	68° (1981)
22	78.6°	75.4°	35%	85.6° (1996)	68.2° (1967)
23	79.2°	75.7°	18%	85.1° (1972)	68° (1967)
24	79.3°	76.3°	27%	84.6° (2010)	71.2° (1967)
25	79.3°	76.1°	25%	84.7° (2010)	68.9° (1979)
26	79.5°	76.6°	27%	83.3° (2025)	70° (1979)
27	80.1°	77.2°	23%	85.8° (2012)	63.7° (1961)
28	80.2°	77.2°	27%	85.6° (2012)	68.5° (1976)
29	80.2°	76.8°	33%	84.7° (2012)	72.5° (1971)
30	80.1°	76.8°	32%	83.5° (1977)	65.1° (1984)
31	80.2°	77.2°	40%	85.3° (1977)	69.1° (1984)