Is there a website that keeps tabs on volumes of different months, say 4 or 5 out because right now I am trading december gold due to it having the most volume. Or do you just watch the volume of those contracts daily to know when to change. Soybeans and natural gas are also this way.

Thanks

CME website itself will have all daily volumes.

If you want to trade the grains, Think or Swim as a platform will be worth looking into. You'll have the volume data you need, analyze calander spreads easily, and also auto roll the front month.