Note: This is not the manual for the latest version. Here is the latest version.
For more information, check the main website.

Upgrading From Previous Versions

Make a backup of your working weathermap directory before you do this! Just in case you do need to roll back.

You should be able to upgrade from any previous version by simply unpacking the new one over the top. The files that will need to be changed afterwards are the same ones you edited when you first installed:

Any necessary database updates for Cacti users should be taken care of automatically.