In August, Knoxville typically sees daytime highs of 30.5°C and overnight lows around 18.6°C. Compared to the annual average high of 20.6°C, August runs +9.9°C.
August in Knoxville averages a daytime high of 30.5°C and an overnight low of 18.6°C.
August runs +9.9°C compared to Knoxville's annual average high of 20.6°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 30.5°C and cooler evenings around 18.6°C.