Denver has opened overflow cold weather shelters throughout the city and will keep them open 24/7 through next week as freezing temperatures and snow showers hound the city, according to the city’s Department of Housing Stability. As Denver faces a High Wind Warning and a winter storm swirls in northwestern Colorado, metro temperatures are forecast to fall to 17 degrees overnight Monday and Tuesday, according to the National Weather Service. Cold overnight temperatures in the low 20s and below will continue in Denver through Sunday, NWS forecasters said.