June in Lake Louise is the cloudiest month of the year. In June, the weather in Lake Louise is typically cold. Average daily high temperature in June is about 9 degrees above zero. On average, Lake Louise has 14 rainy, 8 cloudy, 5 partly cloudy, and 3 sunny days in June. The rains are usually heavy. June as well as January, February, July, and August is considered the most uncomfortable time to visit Lake Louise.