February in Green River is the cloudiest month of the year. In February, the weather in Green River is typically freezing. Average daily high temperature in February is about 1 degree below zero. On average, Green River has 10 cloudy, 8 partly cloudy, 5 snowy, 5 sunny, and 1 rainy day in February. The snowfalls are usually light. February as well as March, April, May, and November is considered the most uncomfortable time to visit Green River.