Welcome fellow Minneapolis person.
How big were your pups parents? There is every size lab on this board, 40lbs something through maybe even +110lbs. My pup is very much on tract to be a very similar but a little bit taller and lighter than his dad, but not far off. And my yellow girl was harder to predict as her parents were very different sizes, small and petite, and tall and lanky .... so I didn't know what I was going to get until she was fully grown (she is just bigger than petite, so took after mom vs dad).
The rule of thumb is you want to easily be able to feel their ribs without seeing them when they are standing still and straight. But as for weight, no such thing as a standard weight for a lab.