Louisiana September Weather

Louisiana weather averages and all-time records in the month of September from 1991–2020 based on data made available by the NOAA.

State:

Month:

Statewide September Averages
High temperature	88.2 °F
Low temperature	67.4 °F
Precipitation	4.5 inches

Louisiana Cities

September weather averages for various places in Louisiana, from 1991–2020.

City	Average (°F)		Record (°F)		Monthly (inches)
City	High	Low	High	Low	Precipitation
Alexandria	89.4	67.1	108	40	3.4
Baton Rouge	88.8	68.8	104	43	4.4
Donaldsonville	87.9	68.9	103	43	5.3
Franklin	86.6	70.0	100	44	5.3
Homer	86.9	63.4	109	36	3.7
Jeanerette	87.3	68.6	101	40	6.3
Jennings	87.9	69.0	107	43	5.8
Lafayette	88.7	70.1	103	41	5.0
Lake Charles	88.8	70.3	105	45	5.2
Leesville	88.8	64.7	109	35	4.3
Minden	88.4	65.6	110	37	3.9
Monroe	88.9	65.9	107	35	3.5
Morgan City	86.7	71.9	99	46	5.5
Natchitoches	88.7	67.4	110	40	3.8
New Iberia	88.9	70.3	101	44	5.0
New Orleans	88.2	72.8	101	42	5.1
Shreveport	89.2	67.3	109	42	3.5
Slidell	87.1	69.6	99	42	4.9
Tallulah	88.2	65.1	107	34	2.9
Thibodaux	88.3	70.1	99	48	6.0