February in Grand Junction is the rainiest and the cloudiest month of the year. In February, the weather in Grand Junction is typically cold. Average daily high temperature in February is about 4 degrees above zero. On average, Grand Junction has 16 partly cloudy, 9 sunny, 3 rainy, and 1 cloudy day in February. The rains are usually light. February as well as January and December is considered the most uncomfortable time to visit Grand Junction.