July and August are Maine's warmest months, and February and March have the most snow. Public transportation is virtually nonexistent, so you'll need to rent a car and make sure you have a good map—especially if you head up north where things get pretty rural. Most people will be more than happy to give you directions, although Mainers are notorious for giving inaccurate directions. And, the further north you go, the thicker the Mainer accent gets. The biggest commercial airport in the state is in Portland but private airstrips do exist elsewhere for charter planes.