I used czb's idea from his ninjawords plugin to display weather from weather.yahoo.com. Result is attached.
Other alternative is to use Netweather from accuweather.com
to get an embed script you could paste to a static html page and use that in a farr alias to display it. You just need to get the embed script from the link above, paste it to a new file, save as html, and change the path to the file in the alias.
alias i used is
Is there an option to make farr open links in a new browser window? Preferably in the default browser and not IE?