Coldest January-March in the US Northeast. Ever

OK the coldest we have official data for.  Even so, it was record cold.

Here's the straighter dope, the Tmin data

Here's the average data

Here's the 30 year trend for Tmax

and for Tmin

And here is what it looks like using GISS

Here's the twenty year trend using GISS

And here it is using the NCDC data

This is most unexpected, unless you are Judah Cohen

Toronto also had it's coldest February ever,