As of 10:59 CDT

Grand Isle, LA weather in March

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 March, Grand Isle, LA averages a high of 66.4° and a low of 61.7°. About 4.8 inches of precipitation fall over the month (8 wet days). The record high is 78.6° (2020) and the record low 33.6° (1980). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	64.4°	59.9°	27%	74.3° (2018)	41.2° (1968)
2	64.8°	59.7°	25%	74.5° (2023)	33.6° (1980)
3	64.6°	58.6°	28%	75.4° (2023)	38.7° (1980)
4	64.2°	58.3°	27%	71.2° (1985)	38.1° (2002)
5	64.6°	59.4°	33%	72° (2018)	42.8° (2019)
6	64.2°	59°	33%	72.7° (2023)	38.1° (1989)
7	64°	59°	27%	73° (2023)	40.5° (1989)
8	64.6°	59.9°	30%	74.8° (2023)	41.5° (1996)
9	65.3°	60.1°	25%	74.1° (2023)	37.9° (1996)
10	64.8°	60.1°	17%	73.9° (2023)	45.7° (1978)
11	65.3°	61°	27%	74.3° (2023)	42.1° (1983)
12	65.8°	61.2°	33%	75.7° (2023)	41.5° (1998)
13	65.7°	61.2°	27%	75.4° (2023)	41.5° (1993)
14	65.8°	61.5°	20%	71.6° (1985)	41.4° (1993)
15	66.6°	62.2°	27%	72.9° (2025)	47.1° (1988)
16	66.7°	62.4°	33%	72° (2012)	51.3° (1962)
17	66.7°	62.4°	35%	73.2° (2021)	50.5° (2005)
18	67.3°	62.8°	23%	73° (2012)	48.4° (2014)
19	67.1°	62.6°	22%	73.6° (2012)	46.6° (1988)
20	66.7°	61.7°	23%	74.5° (2012)	42.1° (1965)
21	66.9°	61.5°	32%	73.9° (2012)	45.9° (2010)
22	66.4°	61.7°	25%	72.5° (2020)	45.7° (1986)
23	66.9°	62.6°	23%	73.6° (2020)	46° (1968)
24	67.5°	63.3°	23%	75° (2012)	47.1° (1968)
25	67.8°	63.7°	22%	76.8° (2020)	49.5° (2013)
26	67.8°	63.5°	30%	73.9° (2020)	47.3° (2013)
27	68.5°	64°	23%	76.5° (2020)	50.5° (1978)
28	69.1°	65.1°	23%	77.7° (2020)	54.7° (2013)
29	69.3°	65.3°	40%	77.2° (2020)	52.9° (1984)
30	69.6°	65.1°	30%	76.1° (2020)	49.1° (1987)
31	69.4°	64.4°	35%	78.6° (2020)	45.5° (1987)