June in Falmouth is the cloudiest month of the year. In June, the weather in Falmouth is typically hot. Average daily high temperature in June is about 29 degrees above zero. On average, Falmouth has 13 rainy, 9 partly cloudy, 7 sunny, and 1 cloudy day in June. The rains are usually moderate. June as well as May, September, and October is considered the most uncomfortable time to visit Falmouth.