October in Pasadena is the sunniest month of the year. In October, the weather in Pasadena is typically warm. Average daily high temperature in October is about 26 degrees above zero. On average, Pasadena has 23 sunny, 6 rainy, and 2 partly cloudy days in October. The rains are usually moderate. October as well as April and November is considered the most comfortable time to visit Pasadena.