A storm arriving in southern Maine on Saturday, just two days after a combination rain-and-snow storm swept through the area, is likely to bring another round of cold, wet weather.

Here is a timeline of Portland’s coming winter weather. Wednesday night: The first hints of winter weather could come overnight, according to the National Weather Service in Portland. There’s a 30% chance of snow starting after 4 a.m., when the low dips to 26 degrees.

Of all the precipitation types, freezing rain is by most measures the worst because it can weigh heavily on trees and power lines.