In case you missed it, North America has experienced a brutal winter. It is now starting to end.
This report discovers that February was the coldest in history, or at least since proper reports were maintained. I suspect that the eighteenth century found years that easily matched it.
As mentioned in this item we are now on the seventeenth year of a cooling trend. It is also likely that the arctic also reversed course three years ago making it an apparent lagging signal. I have assumed that it all connects through ocean currents but that may be wrong. Perhaps atmosphere circulation shifts are responsible.
We have large scale cycles we do not understand.