Rafi Letzter

Temperatures are expected to drop to record lows for this time of year across much of the northern U.S east of the Rocky Mountains. The culprit? A low-pressure mass of Arctic air is making its way down through Ontario, Canada, according to the National Weather Service (NWS).

“Temperatures will be quite chilly for middle May, a good 20 degrees below normal,” on Saturday (May 9), the New York NWS wrote in a Friday forecast discussion. Rain is likely, and flurries are possible, though the mid-May sun makes them unlikely, according to the NWS.

A map shows snowfall predictions for the weekend.

A map shows snowfall predictions for the weekend. (Image credit: NWS)

Farther north and west, things will be colder, with freeze warnings in place across parts of the Great Plains, Appalachians and the Northeast. Several inches of snow are possible in northern Appalachia, according to the national forecast. Lake-effect snow is possible by the Great Lakes, and high winds are expected across the Northeast as the low-pressure system turns into a bona fide storm system.



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