Heavy snow warnings and advisories for the mountains have been extended until 6 a.m. Monday has Pacific air is expected to cause a steady snowfall.
The higher mountain passes are expected to get up to two feet of snow.
The winter storm warning covers all mountain areas west of Vail Pass and northeast of Middle Park.
A couple of days ago, parks and bike trails in the metro area were filled with people taking advantage of spring-like temperatures that reached into the 70s. Today, gloves and coats were required as temperatures dropped nearly 30 degrees.
Today and tonight, snow will increase across the northern mountains while temperatures at lower elevations will remain in the 20s and 30s, according to the National Weather Service.
Cold temperatures will continue Sunday through Monday, with a slight chance of snow, before drier and warmer temperatures are expected for Tuesday.
Forecasters are expecting 1 to 2 feet of snow in Aspen, Crested Butte and Vail from a storm this weekend.
Rain might mix with snow at elevations below 8,000 feet, forecasters said.
Among ski areas, Winter Park reported 11 new inches of snow Saturday, and Aspen Highlands and Copper Mountain reported 8.
Statewide snowpack was 112 percent of the average today, according to the Natural Resources Conservation Service. Snowpack in mountain ranges provide much of the state’s water supply for the year.
