The National Weather Service has issued its first winter weather advisory for the season.
The storm could bring 5 to 10 inches of snow to the high country by Wednesday afternoon. The Front Range will receive rain and cooler temperatures.
But it isn't a complete break from the recent warm weather.
"The system is fairly warm since it is coming from the desert southwest," said Bernie Meier with the National Weather Service in Boulder. "We are expecting snow levels to remain [above] about 10,000 feet. If the system is in any way unusual, it's on the warm side of unusual."
The snow should boost ski areas. Some are reporting a slow start for bookings for this ski season.