NWS Cheyenne: Big Warm-Up on the Way, Some 70s by FridayNWS Cheyenne: Big Warm-Up on the Way, Some 70s by FridayToday will be the coldest day this week, but a big warm-up is on the way with temperatures expected to soar into the upper 60s and 70s by Friday.Joy GreenwaldJoy Greenwald