Southern ME is very humid, northern Maine is not. Once you get above Bangor, it's like living another country LOL. You will have horse flies and cluster flies and that's about it. They don't have ticks, roaches ( a major blessing after living in the south now lol) etc. They don't vax pets for heart worms in N Maine because there is no threat of it.
We lived in southern NH and MA our whole lives and there is no compariosion to NH/MA/VT in the fall! It's amazing and breath taking. Northern ME has a nice fall, but its nothing compared to NH.
We arrived in Caribou 2 days before Thanksgiven and rented a farm on top of a hill with no trees surrounding it for @ 6 weeks. During that time there was a week or two with the wind and cold it was @ 40 below. My DH had to plug in a space heater and stick it under his truck every morning to thaw it so he could start it. That was our initiation to Northern Maine :D