We can expect seasonable weather in Philadelphia on Saturday, with mostly sunny skies and daytime highs into the 40s, but an approaching low pressure system could make for messy travel for those planning Thanksgiving weekend return trips on Sunday and Monday.

The National Weather Service in Mount Holly late Friday afternoon announced a “winter storm watch” for upper Bucks County and regions to the north for Sunday through Monday. The chance for significant snow was greatest along the I-80 corridor.

In Philadelphia and surrounding communities, the forecast was for a mix of sleet, snow, and rain eventually changing to all rain with any accumulations being less than an inch, the weather service reported.

Temperatures will be below freezing Saturday night.

The forecast calls for the rain to persist into the start of the work week Monday before clearing overnight.

It should be mostly sunny with a daytime high of around 42 on Tuesday.

Forecasters are tracking a clipper system that is expected to cross the Northeastern United States on Wednesday, but the weather service says, “It may stay north of our region such that we won`t see much in the way of precipitation with it.”

Stay tuned.