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McAllen September Weather

Averages and records for weather in McAllen, Texas in the month of September.

Typical McAllen September Weather 1991–2020
Average daily high	93.6 °F
Average daily low	74.3 °F
Average monthly precipitation	4.7 inches
Daily chance of precipitation	27.7%

McAllen September Weather Records 1941–2024
Highest temperature	108 °F	September 4, 2011
Lowest temperature	50 °F	September 28, 1942
Highest daily low	84 °F	September 1, 2020
Lowest daily high	65 °F	September 20, 1991
Hottest average high temperature	101.2 °F	2023
Coldest average high temperature	86.9 °F	1984
Most daily precipitation	8.9 inches	September 14, 1973
Most monthly precipitation	11.2 inches	2014

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	96.4	76.5	106	70
September 2	96.2	76.4	106	69
September 3	96.0	76.3	106	67
September 4	95.9	76.2	108	67
September 5	95.7	76.1	107	62
September 6	95.6	76.0	106	64
September 7	95.4	75.9	103	62
September 8	95.2	75.7	105	64
September 9	95.0	75.6	103	64
September 10	94.8	75.4	105	65
September 11	94.6	75.2	103	65
September 12	94.4	75.1	103	64
September 13	94.2	74.9	104	63
September 14	94.0	74.6	104	60
September 15	93.7	74.4	103	59
September 16	93.6	74.2	103	59
September 17	93.4	74.0	104	61
September 18	93.3	73.8	106	60
September 19	93.1	73.7	104	58
September 20	93.0	73.5	103	59
September 21	92.9	73.4	102	59
September 22	92.8	73.2	102	57
September 23	92.6	73.0	105	56
September 24	92.4	72.7	105	55
September 25	92.3	72.5	104	59
September 26	92.2	72.3	103	58
September 27	92.0	72.1	102	55
September 28	91.9	71.9	104	50
September 29	91.8	71.7	101	54
September 30	91.7	71.5	101	54

Weather Station Details

Years	Station	Coordinates
1961–2024	McAllen Miller International Airport	location
1941–1960	McAllen	location