August in Newtonmore is the cloudiest month of the year. In August, the weather in Newtonmore is typically warm. Average daily high temperature in August is about 12 degrees above zero. On average, Newtonmore has 27 rainy and 4 cloudy days in August. The rains are usually heavy. August as well as January, February, March, and April is considered the most uncomfortable time to visit Newtonmore.