October in McAllen averages a daily high of 31.5°C with nights around 19.4°C. Expect roughly 3.6 wet days totalling 45.4mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit McAllen is November–March.
Based on MCALLEN, TX US (2.4km), 1995–2024. 20 years of October data.