It can get well below zero, but that is rare. The coldest months are December and January. The climate in Colorado is dry, so the same temperature won't feel as cold as say Chicago or Boston where the climates are more wet.
Here is the high/low average temperature (Fahrenheit) per month for Denver, CO which is warmer than higher altitude places in Colorado:
Jan-43/15
Feb-47/19
Mar-54/25
Apr-61/34
May-70/44
Jun-82/53
Jul-88/59
Aug-86/57
Sep-77/47
Oct-66/36
Nov-52/24
Dec-44/16
Cold air from Canada is blown there. Denver is a mile high as well, making it windy and chilly.
Denver, Colorado.
Denver, Colorado.
Denver is located in Colorado.
denver is in colorado
On 9 January 1875 it reached minus 29 degrees F.
Denver is the capitol of Colorado
Colorado Springs. http://www.traveleze.com/travel_planning/coloradosprings.html
he lives in Denver, Colorado
Colorado. They play in Denver, Colorado.
The Broncos play in Denver, Colorado.
No, as far as I can find there is only a Denver, Colorado.