Boulder County residents awoke Monday to a light blanket of new snow and snow showers that persisted all day, turning both the morning and evening commutes into a stop-and-go trudge for many.

By nightfall Monday, 4.3 inches of snow had fallen in Boulder, according to National Weather Service meteorologist Scott Entrekin.

Heavier snow was shifting farther south, Entrekin said. He predicted that the snow would diminish around midnight, with an estimated 1 to 2 inches left to fall during the evening Monday.

Officials with the city of Boulder said all 16 plows began working at 7 p.m. Sunday and continued on a regular 12-hour shift.

The plows remained out Monday evening, and since more snow accumulation was expected, they were scheduled for an additional shift from 7 p.m. Monday to 7 a.m. Tuesday.

Tuesday's forecast calls for a mostly sunny day with a high near 29. Temperatures will rise even more on Wednesday, when highs are expected to top 50 degrees.

The next chance of rain and snow comes late Wednesday into Thursday.

The National Weather Service calls for a 40 percent chance of snow on Thursday and a 50 percent chance Thursday night.