In February, the weather in Ust-Unya is typically freezing. Average daily high temperature in February is about 12 degrees below zero. On average, Ust-Unya has 14 snowy, 12 cloudy, 2 sunny, and 1 partly cloudy day in February. The snowfalls are usually light. February as well as January, April, September, and October is considered the most uncomfortable time to visit Ust-Unya.