In August, Lewisville typically sees daytime highs of 35.4°C and overnight lows around 23.1°C. Compared to the annual average high of 24.6°C, August runs +10.8°C.
August in Lewisville averages a daytime high of 35.4°C and an overnight low of 23.1°C.
August runs +10.8°C compared to Lewisville's annual average high of 24.6°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 35.4°C and cooler evenings around 23.1°C.