Publish pages/posts as HTML?

wget --mirror as part of a cron job may do what you need.

The lack of dynamic content will give the following issues:

  • comment support (which I delegate to disqus)
  • search support (which can be delegated to Google site search, though I haven’t implemented that myself)
  • delete of posts no longer work
  • your permalinks should not use the ?postid= form.