After as much as 6 inches of snow fell in the Denver metro area since Monday, forecasters say an arctic airmass will bring "bitterly cold" temperatures to much of northeast and north central Colorado.
Light snow will taper off in the Denver area through the morning, with a forecasted high of only 4 degrees. The forecasted low overnight is -9 with a wind chill of -15. The record low for Dec. 30 is 11 below zero. The Eastern Plains, including Colorado Springs, could see wind chills over 25 to 35 below zero from Tuesday night into Wednesday.
Wind chills down to around 50 below zero are possible in the Rockies. Up to 3 inches of snow is possible there, where a winter weather advisory warns of high winds and rough travel conditions in Aspen, Vail and Crested Butte.
We have 7 deice pads totaling 31 deicing spots. Deicing providers have a total of 116 deicing trucks http://t.co/abZwTJIXkt— Denver Int'l Airport (@DENAirport) December 30, 2014
Mail carriers are taking extra precautions by wearing layers and staying hydrated, Dave Rupert, spokesman for the United States Postal Service in Colorado, told CPR News' newscast unit.
"We have a job to do. People are counting on us," Ruppert said. He added that each carrier is ultimately responsible for how they dress.
"We have some tough old grizzled veterans who've been at this for 30 years plus, and it's no big deal. We have carriers who wear shorts year round, god love 'em," Ruppert said.
The sub-zero cold won't last long; Wednesday's forecasted high in Denver is 27 degrees.
The Associated Press contributed to this report.