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McAllen, TX Weather


McAllen, TX climate is hot during summer when temperatures tend to be in the 80's and mild during winter when temperatures tend to be in the 60's.

The warmest month of the year is August with an average maximum temperature of 96.20 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 48.20 degrees Fahrenheit.

Temperature variations between night and day tend to be moderate during summer with a difference that can reach 21 degrees Fahrenheit, and moderate during winter with an average difference of 21 degrees Fahrenheit.

The annual average precipitation at McAllen is 22.61 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is September with an average rainfall of 4.00 Inches.

Weather Data

Normal Climate

Normal Temperatures

(MCALLEN Weather station, 1.27 miles from McAllen)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Max °F 69.1 73.1 80.6 85.2 89.2 93.6 95.5 96.2 92.3 86.3 78.0 70.6 84.1
Mean °F 58.7 62.3 69.3 74.5 79.8 83.8 85.1 85.7 82.2 75.6 67.5 60.2 73.7
Min °F 48.2 51.5 58.0 63.8 70.3 73.9 74.7 75.1 72.1 64.9 56.9 49.7 63.3

Normal Precipitation

(MCALLEN Weather station, 1.27 miles from McAllen)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Inch 1.20 1.37 0.95 1.36 2.51 2.49 1.70 2.31 4.00 2.76 0.95 1.01 22.61