Meteorologist Classic is the Mac OS X Meteorologist application - completely revamped - but still your weatherman without the man.
A lightweight, customizable OS X menubar app to display weather and forecast conditions. Select from four weather sources to bring you weather at your fingertips. The Classic version is like a classic car - restored to its former glory, polished, and enhanced. Runs on all Mac computers with Intel processors!
Visit the original project for some legacy background as well as Ed's rewrite in the Swift language.
Meteorologist
Features
runs on all Intel Macs (32/64 bit binary)
4 weather services to select from
highly customizable display
internationalization support
https://sourceforge.net/projects/heat-meteo-classic/