In July, McAllen typically sees daytime highs of 35.6°C and overnight lows around 23.5°C. Compared to the annual average high of 29.5°C, July runs +6.1°C.
July in McAllen averages a daytime high of 35.6°C and an overnight low of 23.5°C.
July runs +6.1°C compared to McAllen's annual average high of 29.5°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 35.6°C and cooler evenings around 23.5°C.