March in Klamath Falls is the rainiest month of the year. In March, the weather in Klamath Falls is typically cold. Average daily high temperature in March is about 7 degrees above zero. On average, Klamath Falls has 15 rainy, 9 cloudy, 5 sunny, and 2 partly cloudy days in March. The rains are usually moderate. March as well as January, February, November, and December is considered the most uncomfortable time to visit Klamath Falls.