Yes, that did the trick for me. So the full code is:
<a href="{{ copyright_link }}" rel="external" target="_blank" title="{{ strings.view_forecast|format(wunderground.response.location.name) }}"><img src="{{logo}}" alt="Wunderground.com" width="49" height="22" /></a>
For the sake of others who might come across this thread, Zack pointed me to this documentation regarding the correct way to modify wunderground template files. Otherwise, you’ll lose your changes on the next plugin upgrade.
https://github.com/katzwebservices/Wunderground/#using-your-own-templates
Just want to be sure everyone is aware of this.