Any child who grew up trick or treating in Canada knows that nothing ruins good Halloween fun like having to put on a winter jacket over or under your costume. Unfortunately, again the weather won't be on most Canadians' sides this year. The Halloween forecast for five Canadian provinces isn't looking too good. 

According to The Weather Network, some Canadians should start getting ready for a chilly Halloween. There's even a possibility of snow in some areas. 

So, unfortunately, you might have to pull out the winter jacket and boots if you plan on heading outside this Halloween in some central and eastern provinces.

"All the cold has been basically out in the west, about 10°C to 15°C below their normal values whereas it's still been relatively warm in the east. Well, we're expecting a shift," said meteorologist Jaclyn Whittal. 

From October 1 to October 17, cold air has been hanging around western Canada while other parts of the country have been right at their normal temperatures or just above that. 

For the end of October, that cold air is expected to shift to the east which means many Canadians could be in for a cold Halloween. 

Saskatchewan, Manitoba, Ontario, Quebec, and New Brunswick are forecasted to see temperatures below normal for the end of October and even into early November. 

Plus there's a possibility for lake-effect snow in Ontario so you might have to wear your jacket if you're heading out on Halloween and shovel the driveway, sidewalk, and porch for trick-or-treaters.  

"A more significant show of cold weather towards Halloween has the potential to set off bands of significant lake-effect snow in the traditional snow belt regions of the Great Lakes," according to The Weather Network. 

Places right along the coast in western Canada, Newfoundland and Labrador, and northern Quebec will get above normal temperatures for the end of October.

Prince Edward Island, Nova Scotia, Alberta and some parts of B.C. will see normal temperatures, which might still be a little cold. 

"So, for much of central Canada it looks like you will need an extra layer or two and possibly even boots for trick or treating," according to The Weather Network. 

But this isn't exactly unusual for Canada. Halloween has been ruined many times over the years for Canadians because of cold temperatures, snow and even polar bears

While The Weather Network said it's too early to say definitively if there will be snow on Halloween, they are confident that most provinces will see below-normal temperatures for the end of October. 

There are stories everywhere. If you spot a newsworthy event in your city, send us a message, photo, or video @NarcityCanada on Twitter and Instagram.