Grand Junction, Colorado, gets 9 inches of rain per year. The US average is 37. Snowfall is 22 inches. The average US city gets 25 inches of snow per year. The number of days with any measurable precipitation is 73.
On average, there are 245 sunny days per year in Grand Junction, Colorado. The July high is around 93 degrees. The January low is 16. Our comfort index, which is based on humidity during the hot months, is a 65 out of 100, where higher is more comfortable. The US average on the comfort index is 44.