I usually average 20+ mph, 23mph on a good day with no wind, but in the last month it seems that a tailwind is nothing but a myth. Nothing but nonstop-in-your-face wind. I hate living on the lake.
But alas, I don't care about average speed anymore. I usually average at 18.3 on my regular 62 mile route, the vast majority is flat, but I've got 8-10 hills which are all leg-breakers to climb, they probably make up 7-10 miles of the route.