If you wake up to snow on Christmas in Seattle, consider it a rarity. It’s been five years since the last snowy Christmas morning.

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White Christmas. What more can you say?

The Puget Sound area woke up to a rare treat this holiday as perfect conditions combined to bring snow.

Big, white flakes began falling Sunday afternoon and evening, even in the lowlands, and continued overnight. The National Weather Service said in a tweet this morning that snowfall would gradually taper off today.

National Weather Service meteorologists had predicted between 1 and 3 inches would fall overnight, depending on the area, with largest expected in the Hood Canal area.

Cold temperatures could make driving hazardous. Washington state Department of Transportation said in a tweet Monday morning that it had dozens of crews out on area roads and highways.

Just how rare is snow on Christmas in Seattle? Weather Service meteorologist Jeff Michalski said statistics show the probability of an inch of accumulation at the Seattle-Tacoma International Airport on Christmas morning — the official NWS definition of a “White Christmas” — is about 7 in 100.

The most that’s ever fallen in Seattle on Christmas Day was 1.18 inches, in 1909, he said. That was measured at the Federal Building downtown. An inch fell on Christmas in 1965, according to the NWS.

The last year there was measurable snow on Christmas in Seattle was 2008 — and it was a doozy. A big storm that week left 4 inches of accumulated snow blanketing the city when Christmas Day dawned.