[AZ-Observing] Wind Changes?

It seems this last winter, this spring and this summer there have been 
more winds from the north than usual. I notice this because the main 
door to my house in Dewey faces north and it is annoying when it keeps 
flying open when I give it a shove. Then I have to give it a harder 
shove. Does anyone know if there has been any documented changes in wind 
directions during this period of time, possibly due to global warming?
Stan
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