July in Arrowtown is the coldest month of the year. In July, the weather in Arrowtown is typically cold. Average daily high temperature in July is about 2 degrees above zero. On average, Arrowtown has 15 rainy, 6 sunny, 6 cloudy, and 4 partly cloudy days in July. The rains are usually moderate. July as well as January, April, May, and June is considered the most uncomfortable time to visit Arrowtown.