One of the coldest airmasses of this winter season is going to plow into the region later today and tonight.
As of 7AM Monday, an arctic cold front was diving southeastward across the Great Lakes and southern Canada. This boundary will race across New York State and New England today, pushing offshore overnight tonight and ushering in bitter cold air.
Temperatures in the 40s today will drop into the 30s around dinnertime and then plummet overnight, reaching the 10s across most of the area by Tuesday morning. The passage of the arctic front could be accompanied by a few snow showers or a brief heavier snow squall.
In addition to bitter cold air, very strong west and northwest winds will develop over the area later this evening and persist into a good chunk of Tuesday. It’s likely that winds will gust over 50 mph across the entire Cape and it’s possible that some exposed shoreline locations along Cape Cod Bay gust to 60 mph at times. That, combined with temperatures in the 10s, will create wind chill values well below zero.