June in Granby is the windiest month of the year. In June, the weather in Granby is typically warm. Average daily high temperature in June is about 15 degrees above zero. On average, Granby has 16 sunny, 11 partly cloudy, and 3 rainy days in June. The rains are usually light. June as well as {{month_nom: February}}, and {{month_nom: February}} is considered the most comfortable time to visit Granby.