Seems to me a viable hypothesis. .....
Consider the following.
Mid latitudes warm, it is of course attributed to Global Warming.
Mid latitudes chill, it is.....attributed TO GLOBAL WARMING!
The hypothesis which at first seems plausible, on examination has a little problem.
I submit that a more likely explanation is the phenomena called in Old-Speak...
....summer...and...winter...
Good luck with your Conspiracy Theories. How are they working out for ya?