weather.com recently changed their terms and conditions. This breaks most (all?) of the SysStats weather widgets. Basically a lot of the weather widgets use the following hostname in the url:
xoap.weather.com
If you change this to
xml.weather.com
All will be well (at least for now).
Typically you will find this URL in a meter called 'weather'. You could just search for it in the .ini file and replace it with the new hostname though.