In August, Kennewick typically sees daytime highs of 30.9°C and overnight lows around 13.6°C. Compared to the annual average high of 17.9°C, August runs +13.0°C.
August in Kennewick averages a daytime high of 30.9°C and an overnight low of 13.6°C.
August runs +13.0°C compared to Kennewick's annual average high of 17.9°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 30.9°C and cooler evenings around 13.6°C.