In July, Lewisville typically sees daytime highs of 35.4°C and overnight lows around 23.6°C. Compared to the annual average high of 24.6°C, July runs +10.8°C.
July in Lewisville averages a daytime high of 35.4°C and an overnight low of 23.6°C.
July runs +10.8°C compared to Lewisville's annual average high of 24.6°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 35.4°C and cooler evenings around 23.6°C.