Temperamental weather conditions continue across the Maritimes with the spring-like temperatures set to swing back into winter mode as a nor'easter approaches the region this week.

CBC Meteorologist Kalin Mitchell said the storm, expected late Tuesday night and into Wednesday morning, is expected to bring strong winds and snowfall amounts in the range of 15 to 25 centimetres for parts of Nova Scotia and Prince Edward Island.

Mitchell said 10 to 20 centimetres is possible in southern New Brunswick.

"Late Tuesday night a nor'easter moving up off the eastern coastline of the United States is expected to impact large parts of the Maritimes with snow and very strong winds," said Mitchell.

"The snow will also be accompanied by gusty east and northeast winds. Some wind gusts may reach 80 kilometres an hour or higher. The strong winds will combine with the falling snow to create heavy blowing snow reducing visibility at times to white out conditions."

Environment Canada also issued a winter storm watch for all of Nova Scotia, P.E.I. and the southern half of New Brunswick, warning of "dangerous winter driving conditions."

Mitchell said it's best to plan for a messy morning commute on Wednesday.

"It would be a good idea to start making some plans for possible cancellations on Wednesday — schools, flights and events. The storm could still change track, but better safe than sorry," he said.