August in Wrangell is the warmest month of the year. In August, the weather in Wrangell is typically warm. Average daily high temperature in August is about 14 degrees above zero. On average, Wrangell has 24 rainy, 4 sunny, 2 partly cloudy, and 1 cloudy day in August. The rains are usually heavy. August as well as January, February, March, and April is considered the most uncomfortable time to visit Wrangell.