July in Salmon Arm is the sunniest and the warmest month of the year. In July, the weather in Salmon Arm is typically warm. Average daily high temperature in July is about 22 degrees above zero. On average, Salmon Arm has 17 sunny, 9 partly cloudy, and 5 rainy days in July. The rains are usually light. July as well as August is considered the most comfortable time to visit Salmon Arm.