March in Salmon Arm is the rainiest month of the year. In March, the weather in Salmon Arm is typically cold. Average daily high temperature in March is about 3 degrees above zero. On average, Salmon Arm has 17 rainy, 12 cloudy, 1 snowy, and 1 sunny day in March. The rains are usually moderate. March as well as April and October is considered the most uncomfortable time to visit Salmon Arm.