For those of you in south metro Denver including Highlands Ranch you might want to read this From Landscape Connection:
Due to the amount of snow we received over night, please remember to brush snow off the trees and shrubs if the snow is weighing down the branches. You can use a broom or snow shovel and hit the branches from the undersides, not from the top as you could break the branches.
Turn off your irrigation clock and cover your backflow with insulation or a hefty plastic bag if it is not covered already, we are suppose to get below freezing tonight.
Cover your tender plant material if they have to stay outside, just make sure the cover stays elevated.