(June – September)
The average summer temperatures in Sumner County can be in the 80Fs and 90Fs, and lows in the 60Fs and 70Fs. Humidity levels can range dramatically.
While visiting Sumner County in the summer months, pack lightweight, breathable clothing. Hats, sunglasses, and sunscreen are highly encouraged, especially as temperatures hit their high point around lunchtime. Summer rain can occur, so sometimes an umbrella is needed. Carrying a water bottle to re-hydrate is an easy way to stay refreshed while exploring Sumner County in summer temperatures. Recreational water activities on Old Hickory Lake in Sumner County are a popular pastime in the summer months.