Tees, I haven't read your thread closely enough to determine if he was buried in the state of New York and in which month he was buried, but these are three reasons I've come across:
Winter Weather: I've not come across this situation personally, but a few friends have told me about delays with their ancestors' burials due to the ground being too hard to dig during a particularly cold winter spell.
Rainy Weather: once again, a friend told me, there was a delay in her relative's burial, due to extreme rain conditions. It delayed the process for a couple of weeks.
More recent burials: one friend told me the cemetery workers were on strike, so there was a delay in burials!