Those who've never been to Colorado might imagine a frigid, snowy states. However, Denver's 300 sunny days a year and overall mild temperatures are a point of pride among Coloradoans. Due to the Rocky Mountains which split the state in half, climate differs greatly from east to west, low to high. The weather changes rapidly and unpredictably, so be prepared for anything if you're traveling in most seasons. Colorado is also an exceptionally dry state, and has suffered through several recent droughts. Drink lots of waters and watch for dehydration.