Rich, what is your grill environment? Are you shaded? Obviously everyone is different, but I know many people grill year round. Personally, I've enjoyed making mods to my grill that let me extend what I can do with it. A second level grate and trying different techniques helps me get good wings. I'm covered, shaded and usually wind protected (though I do have an overhead fan). 20s or 90s+ with extreme humidity I mostly keep at it. I know there are folks on TVWB that cook unprotected with three feet of snow. (Shovel required. Egad!)
But more to the point and at the risk of losing any cred I may have, when is Natl Chicken Wing Day? I have never heard of it and I want to play!