More snow overnight and cold temperatures Monday morning mean roads are slick.
National Weather Service predicts 10-16 inches of snow along the Front Range by Monday.
A powerful storm forecast to hit this weekend has so far only brought a dusting of snow to the Front Range, but is expected to pick up later on Saturday.
Though temperatures are high now, a record-setting February is unlikely, said the National Weather Service.
The state needs about 125 percent of normal precipitation to get to normal snowpack for the the state.
At least 30 flights from Denver International Airport have been canceled to cities including New York, Boston and Philadelphia.
"It’s going to feel like the tropics," meteorologist Eric Thaller said, forecasting temperatures in the 20s.