I see that you have released many newer versions for Firefox, but this code hasn't been updated in years. I was considering upgrading to the Pro version, but I prefer to support developers which publicly publish their code in ways that are more accessible and open. Please update this repository.
Overall I really like the look and feel of your extension, but the lack of any form of radar is a huge negative, imo. As a result I'm am currently using the far less polished "Forecast Fox (Fixed Version)". If you ever add radar support, I'll gladly switch.
For where to put it, my suggestion would be to have an arrow right below the weekly forecast that the user can click to pull up a radar that fills the popup "window". It'd be a great size for the radar and it'd be MUCH bigger than the tiny one in Forecast Fox.
Not really an issue more of a request. The location option only gives a choice of USA zip codes, i live outside America in the UK so a place name option or postcode option would be ideal. Also an option to change from ºF to ºC would be good too.
The best weather extension i have found in the chrome store keep up the good work.