In February, the weather in Ishim is typically freezing. Average daily high temperature in February is about 10 degrees below zero. On average, Ishim has 12 cloudy, 6 snowy, 6 sunny, 4 partly cloudy, and 1 rainy day in February. The snowfalls are usually light. February as well as January, October, and December is considered the most uncomfortable time to visit Ishim.