July in Forfar is the rainiest and the warmest month of the year. In July, the weather in Forfar is typically warm. Average daily high temperature in July is about 15 degrees above zero. On average, Forfar has 25 rainy, 3 sunny, 2 cloudy, and 1 partly cloudy day in July. The rains are usually moderate. July as well as January, February, April, and May is considered the most uncomfortable time to visit Forfar.