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Lafayette September Weather

Averages and records for weather in Lafayette, Louisiana in the month of September.

Typical Lafayette September Weather 1991–2020
Average daily high	88.7 °F
Average daily low	70.1 °F
Average monthly precipitation	5.0 inches
Daily chance of precipitation	31.4%

Lafayette September Weather Records 1893–2024
Highest temperature	103 °F	September 3, 2000
Lowest temperature	41 °F	September 28, 1896
Highest daily low	81 °F	September 1, 2020
Lowest daily high	62 °F	September 28, 1896
Hottest average high temperature	94.9 °F	1933
Coldest average high temperature	82.9 °F	1967
Most daily precipitation	6.2 inches	September 11, 1998
Most monthly precipitation	16.2 inches	1973

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°F)		Record (°F)
Day	High	Low	High	Low
September 1	90.9	72.9	101	57
September 2	90.8	72.8	102	57
September 3	90.7	72.7	103	59
September 4	90.6	72.5	101	56
September 5	90.4	72.4	100	56
September 6	90.3	72.3	101	58
September 7	90.2	72.1	100	56
September 8	90.0	72.0	99	54
September 9	89.9	71.8	98	55
September 10	89.7	71.6	101	52
September 11	89.5	71.4	98	52
September 12	89.3	71.2	99	50
September 13	89.1	70.9	99	52
September 14	89.0	70.6	99	50
September 15	88.8	70.3	100	48
September 16	88.6	69.9	100	48
September 17	88.5	69.6	99	54
September 18	88.2	69.3	100	47
September 19	88.1	69.0	99	46
September 20	87.8	68.8	100	47
September 21	87.7	68.5	99	48
September 22	87.5	68.2	97	45
September 23	87.3	67.9	98	45
September 24	87.0	67.7	97	47
September 25	86.7	67.4	97	52
September 26	86.5	67.1	97	43
September 27	86.3	66.7	95	42
September 28	86.0	66.4	96	41
September 29	85.8	66.1	95	42
September 30	85.6	65.8	97	45

Weather Station Details

Years	Station	Coordinates
1893–2024	Lafayette Regional Airport	location