Even when you know a change is coming, it is still hard to believe what a difference a day makes in the Grand Valley.

One day it is 67 degrees and beautiful and  you're enjoying some time on the golf course -- and less than 24 hours it's 30 degrees colder and it's snowing  and your golf game seems like a distant memory.

A view of the Bookcliffs north of Grand Junction illustrates just how different two days in the Grand Valley can be. Welcome to the arrival of winter.

More From ESPN Western Colorado