August in Talkeetna is the rainiest month of the year. In August, the weather in Talkeetna is typically warm. Average daily high temperature in August is about 15 degrees above zero. On average, Talkeetna has 17 rainy, 7 sunny, 5 partly cloudy, and 2 cloudy days in August. The rains are usually heavy. August as well as April, June, July, and September is considered the most uncomfortable time to visit Talkeetna.