I've found the dates that Morgans can fall into (often not that many in the calendar), end up at the mixed weather ends of the calendar (Spring or Autumn) and therefore poor weather dissuades many owners.
In April 2008 there was an unexpected snow storm, one of the few times I've had to put the hood up.
They are not always rigorous in enforcing the theme though, they waved me through to the grid once on a super car day. My son was delighted, we parked between a Ferrari 360 and a Lamborghini.
~iw
