The metro region could receive up to 5 inches of snow overnight, as winter weather pounds the mountains and slows traffic overnight, according to the National Weather Service office in Boulder.
A winter weather advisory is in effect until 5 a.m. across most of the Colorado mountains as heavy snowfall, icy roads and wind gusts slow travel across the region.
Chain laws are in effect for most mountain passes, according to the Colorado Department of Transportation.
The heaviest Front Range snowfall is expected south of the metro region, with up to 8 inches along the Palmer Divide between Denver and Colorado Springs.
The overnight low in Denver is expected to be 18 degrees.
Denver has a 30 percent chance of adding another inch of snow in the metro region Tuesday, as the high reaches only 33 degrees under cloudy skies, according to the forecast.
The highs will return to near 50 Wednesday and Thursday, but a of snow lingers as low temperatures remain in the 20s the rest of the week.
The central mountains will see up to 8 inches of new snow tonight before it tapers off after midnight, according to forecasters.
The heaviest snowfall is expected in southern Colorado, which could add up to 11 inches in some areas, according to the national Weather Service office in Grand Junction.
