The trick or treat affair will witness early-season snow on Friday.
While Canadians in the western and northern parts of the country generally won't see the frightful weather this Friday, people in parts of Michigan, northern and eastern Wisconsin, the Ohio Valley and Appalachians can observe wet snow on Friday morning and night.
The white blanket of snow is expected to cover the Great Lakes and Northeast on Saturday from morning onward.
New Jersey can expect high temperatures as they will be hovering in the mid-to-upper 50s (Fahrenheit) during the day and falling to the 30s overnight, meaning trick-or-treaters can expect brisk conditions as the evening rolls on.
The one large exception will be along the West coast where rain and mountain snow are likely, along with gusty winds.
Freezing morning can dampen the notorious Monday blues for the office goers in Washington, D.C., Baltimore, Philadelphia, New York and Boston.