Rated 4 out of 5 stars

My temporary solution:

I changed the lines 8 and 9 of the accuweather-adapter.js
file:
Example:
http://forecastfox3.accuweather.com/adcbin/forecastfox3/current-conditions.asp?location=${location}

I removed the metric and the langId property. When forecastfox tries to open the url with the other properties I get an error most of the time. With this modification I get a valid xml file and forecastfox updates the weather correctly.

TODO:
I can't edit the options, maybe some of you has more time, so I use my old configuration. I don't know if this works with new forecastfox installations.