elikapeka
We’ve driven to Colorado more times than I can count. You can hit winter weather anywhere along the route. Watch conditions at Snoqualmie. The Blue Mountains just outside of Pendleton can get very snowy and icy. Try to hit it during daylight hours. I-84 from Twin Falls heading into Utah can get very icy as well. Even though you’re avoiding the mountain passes of I-70, I-80 through Wyoming often is closed due to blizzard conditions. The wind never stops blowing through there, and if it’s snowing, visibility can be down to nothing in an instant and the road become a sheet of ice. Then again, you may have beautiful weather the whole way. We always turn right at Cheyenne and head south on I-25, so I can’t help you beyond there. Just make sure you have warm sleeping bags, plenty of food and water and are prepared to pull off and wait if you have to.