In October, the weather in Kostroma is typically cold. Average daily high temperature in October is about 4 degrees above zero. On average, Kostroma has 9 rainy, 8 cloudy, 7 sunny, 6 partly cloudy, and 1 snowy day in October. The rains are usually heavy. October as well as January, February, June, and September is considered the most uncomfortable time to visit Kostroma.