Works Great Once You Get Your API Key to Save
Make sure you register for your wunderground.com API Key here:
http://www.wunderground.com/weather/api/
Then enter it into the plugin under the "Provider Key" heading and then click "Set". It took a couple tries to make it save but now everything works great.
http://www.wunderground.com/weather/api/
Then enter it into the plugin under the "Provider Key" heading and then click "Set". It took a couple tries to make it save but now everything works great.