Yellowstone National Park ranges from about 7,500ft to 14,000ft. It is very cold and very snowy there from October through May. They do not keep all the roads open all the time. In winter some roads are open to Nordic skiing and some for snowmobiles…no cars.
My point is that if you plan on a Yellowstone trip in spring or fall you need to find out if you can even get to the spot you want. I failed at getting to my spot one spring. You can read that post here:
The roads are not completely open until Memorial Day. But they open incrementally starting around April 26th. Budget cuts may also effect how quickly the roads are opened…Finally…there is a lot of snow there so even if the roads are open you may not be able to see the ground beneath 3 feet of snow.
The parks’s facilities closings are found here:
They manage not just visitors but also wildlife and many areas are closed during various breeding seasons in the spring. There are lots of reasons in the fall, winter and spring why the place you want to explore may not be accessible.
The best plan is to call ahead. Here is the Visitor Center info number:
But please, if all 9,000 of you call at the same time they will close the doors, turn out the lights and go home…
A cautionary note from Forrest: