SMF is a good forum package, but I am not sure it will be easy to customize into a home page. If your home pages wants to do more than host forums, consider something like WordPress, which is meant to be configures with various window panes and sets of links, some of which could be to your forums. Not weather related, but take a look at this site's home page
with links to forum, blog, and gallery software pages where these pages all interlock with mutual access. The home page is all html, the forum, blog and gallery pages come from smf, WorkPress, and Coppermine respectively.