Rain continued to fall in much of the Washington region Sunday evening and could persist through Monday, but in far western sections of the region, Monday could bring heavy snow, according to the National Weather Service.

The weather service issued a winter storm warning Sunday for Garrett County, on Maryland’s western edge. The warning also included the far western part of Allegany County.

Five to nine inches of heavy wet snow could fall between late Sunday and late Monday, the weather service said.

Heavy snow also could fall in adjacent areas of Pennsylvania and West Virginia, forecasters said.

The wet snow could be hard to clear, and could pull down tree limbs and power lines, forecasters warned.

The weather service issued a winter weather advisory, for central and eastern parts of Allegany, including Cumberland.

In that area, closer to Washington, three to five inches of wet snow could fall between 5 a.m. Monday and 2 a.m. Tuesday, forecasters said. They said the primary locations for the snowfall would be at elevations above 1,500 feet.

For the immediate Washington metropolitan area, the forecast called for additional rain Sunday night, and a smaller chance of rain on Monday. But Monday is expected to be cold and windy.