June in Moose Jaw is the rainiest month of the year. In June, the weather in Moose Jaw is typically warm. Average daily high temperature in June is about 20 degrees above zero. On average, Moose Jaw has 15 rainy, 10 sunny, and 5 partly cloudy days in June. The rains are usually heavy. June as well as January, February, March, and April is considered the most uncomfortable time to visit Moose Jaw.