Most precipitation that reaches the ground actually begins as snow high in the atmosphere. These snow flakes develop somewhere above the freezing level where the air temperature is below the freezing point of water. as they to fall toward the earth as snow. The falling snow passes through the warmer air lower down, where it melts and changes to rain before reaching the ground.
So you could say that it is snowing everywhere.
As for Snow in Colorado, the snow line, the line where temperatures hover around freezing, is at about 8000 - 9000 feet this weekend. The mean elevation of Colorado is 6,800 feet, with the lowest point in Colorado at 3,317 feet. Colorado's capital, Denver (nicknamed Mile-High City) ranges from 5,130 to 5,690 feet and probably won't see snow on the ground.
Of course deniers know that weather does not equal climate, but hey when you don't have evidence, just make something up, right?