October in Cotulla is the sunniest month of the year. In October, the weather in Cotulla is typically warm. Average daily high temperature in October is about 27 degrees above zero. On average, Cotulla has 26 sunny, 3 partly cloudy, and 2 rainy days in October. The rains are usually light. October as well as February, March, and November is considered the most comfortable time to visit Cotulla.