Memorial Day weekend is widely regarded as the unofficial start to summer in the United States, but two of the past four years have featured snow in portions of northern New England and upstate New York. This year, it's some parts of the Rockies that may see snow instead of sun for the holiday weekend.

While most of the country enjoys warm and humid weather this weekend, residents of the Rockies may be , which announced earlier this week that it would extend the skiing and snowboarding season through the Memorial Day holiday.

The highest peaks of the Rockies and Cascades are expected to get some accumulating snow during the holiday weekend, but that's not unusual for late May.

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European Model total snowfall forecast through Memorial Day.

New Englanders probably remember last year's Memorial Day weekend quite well, although they probably wish they could forget it.

Snow came down heavily at times Saturday morning in places like Portage, Maine, where 5.2 inches of snow was measured. Presque Isle picked up one inch of snow, while Caribou received 0.3 inches – the city's second-latest measurable snowfall on record.

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The unofficial start to summer in 2014 featured temperatures more typical of May in New England, but 2013 was another memorable Memorial Day weekend for both northern New England and northern New York.

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Whiteface Mountain, one of the High Peaks in the Adirondacks of New York, measured up to 34 inches of snow from May 24-26, 2013. Across Lake Champlain, Mount Mansfield in Vermont picked up 13.2 inches of snow.

The heavy, wet nature of the snow caused tree damage and power outages in the region.

, snowflakes were observed at elevations as low as 750 feet during the Memorial Day Weekend 2013 storm. Accumulations were confined to elevations of 1,500 feet and higher in northern New York, northern Vermont and northern New Hampshire.

MORE ON WEATHER.COM: 50 States' Biggest Snow Days

Florida: 4 inches

Milton, Florida, located just to the northeast of Pensacola, recorded 4 inches of snow on March 6, 1954. Image: Snow at the Alabama/Florida border on Feb. 12, 2010 from iWitness Weather contributor ismsan.