As of 13:17 CDT

Grand Isle, LA weather in December

86°

Grand Isle, Sunday, 9 August, 13:17

Rain. Feels like 93°. High 86°, low 82°.

Pressure30.06 inHg

Wind9.6 mph SE

Humidity66%

Visibility6.2 mi

Dew point73°

See detailed hourly forecast

In December, Grand Isle, LA averages a high of 64° and a low of 58.1°. About 4.3 inches of precipitation fall over the month (9 wet days). The record high is 74.8° (2021) and the record low 22.5° (1989). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	65.1°	59.7°	25%	74.1° (1985)	41.2° (1974)
2	65.7°	60.1°	25%	73° (1978)	43.5° (1974)
3	66°	60.8°	20%	74.5° (1978)	47.5° (2000)
4	65.7°	60.3°	28%	73.9° (1978)	45.1° (2006)
5	65.5°	59.7°	27%	72.7° (1998)	44.4° (2009)
6	65.3°	59.4°	28%	74.5° (1998)	44.6° (1984)
7	64.2°	59.2°	28%	74.5° (1998)	43° (1984)
8	64.8°	58.8°	23%	74.1° (1998)	40.6° (2006)
9	65.1°	59.4°	25%	73.6° (2021)	42.6° (2017)
10	65.1°	58.3°	38%	74.7° (2021)	42.4° (1978)
11	63.5°	57.9°	32%	74.8° (2021)	43.9° (2008)
12	64.4°	58.5°	28%	73.2° (1961)	35.4° (1962)
13	64.8°	59.4°	35%	73.4° (2015)	32.9° (1962)
14	64.8°	58.8°	30%	74.8° (2022)	41.2° (1962)
15	64.4°	58.3°	27%	72.3° (1971)	42.3° (1968)
16	64°	58.3°	23%	72° (1971)	40.3° (1989)
17	63°	56.8°	33%	73.6° (1961)	40.3° (1973)
18	63.3°	56.5°	27%	74.1° (2021)	42.6° (1996)
19	63.3°	57.7°	27%	70.7° (1967)	34.5° (1996)
20	63.7°	57.6°	28%	71.2° (2012)	40.1° (1996)
21	63.3°	57.9°	28%	71.6° (2013)	40.8° (1960)
22	63.5°	57.7°	37%	71.4° (2013)	30.7° (1989)
23	64°	56.8°	33%	73.8° (2015)	22.5° (1989)
24	62.2°	55.4°	35%	72.7° (2015)	26.2° (1989)
25	60.6°	54.1°	30%	72.5° (2015)	27° (1983)
26	61.5°	54.7°	18%	72.7° (2015)	34.5° (1983)
27	63.5°	57.9°	35%	73.4° (2015)	39.7° (2010)
28	64.4°	58.1°	37%	73.9° (2015)	44.4° (1967)
29	63°	57°	30%	74.1° (2021)	38.1° (1983)
30	63.3°	57.6°	27%	73.8° (2021)	33.1° (1983)
31	63.9°	57.9°	55%	74.3° (2021)	39.4° (1983)