February in Eureka is the cloudiest month of the year. In February, the weather in Eureka is typically warm. Average daily high temperature in February is about 11 degrees above zero. On average, Eureka has 15 rainy, 6 sunny, 4 cloudy, and 4 partly cloudy days in February. The rains are usually heavy. February as well as January, March, November, and December is considered the most uncomfortable time to visit Eureka.