Before I ask this, I realize that the data would vary based on each niche. But which months, year after year, are the best for Adsense overall? I guess it would be December due to the Xmas holidays. Which months are generally the worst? Summer months? Perhaps when the weather is best throughout the United States, that's when earnings and RPM would drop. That's a theory. If that's true then cold weather combined with the holidays would favor November through February.

It would be great if Google came out with a monthly chart showing when publishers can expect to hit bottom and when the rebounds typically start. Again, I realize this is going to vary considerably based on the niche of each website. Surely, as a whole, the overall data exists.