This is a GREAT program! AND AC46 AND SALAL, IT DOES SUPPORT METRIC/CELCIUS!! And it's easy to do, if you would just poke around a bit. Go to "Show City Editor", "Edit City", "Weather Items", "Unit Selection" then choose "Celcius" on each item that you want to select Metric. Then update. Go to the next city that you want to make metric, and it gets even easier! Just select "Import this cities prefs" (it will offer you the last city you worked on as the model) and you're done! Simple! NOW... go back and change your respective ratings to a 5 Star! Don't hold this excellent freeware program hostage for your inability to figure out how to use it. As a matter of fact, it's shareware, and it's so good, I'm going to send the author a donation.