October in Osoyoos is the rainiest month of the year. In October, the weather in Osoyoos is typically warm. Average daily high temperature in October is about 11 degrees above zero. On average, Osoyoos has 11 rainy, 9 sunny, 8 partly cloudy, and 3 cloudy days in October. The rains are usually moderate. October as well as January, February, March, and April is considered the most uncomfortable time to visit Osoyoos.