Consider it a gift if it happens, because the climatological odds are against any measureable snow being around Philadelphia on Christmas Day.
It has happened, just not very often. In 1966, over a foot fell on Christmas Eve, and snow continued into the early-morning hours.
Five years ago, a slushy 1.1 inches was recorded at the airport on Christmas Day , with substantially more in some suburban areas as rain turned to snow.
By the solstice, it may be getting colder, but the peak snow season is still about a month away.
In December, the ocean surface is warm enough to work against big snowstorms in the I-95 corridor. Coastal storms generate powerful winds from the east, and that can draw in enough warmth to turn snow to cold rain.
Here is the Christmas snow list for the period in which official measurements have been taken at Philadelphia International Airport.
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