March in Kelowna is the rainiest month of the year. In March, the weather in Kelowna is typically cold. Average daily high temperature in March is about 3 degrees above zero. On average, Kelowna has 18 rainy, 11 cloudy, 1 snowy, and 1 sunny day in March. The rains are usually light. March as well as April is considered the most uncomfortable time to visit Kelowna.