I have used this plugin for about a year or more and it worked flawlessly, initially. At some point, probably due to changes on or in my system, it developed a glitch and stopped updating the data every few hours automatically (as mentioned by jmanko above). I contacted Tim and he responded quickly. I appreciate his notice of a few days ago that the new version 1.2.3 was available. The new version has been running now for several days and is working great!
This plugin offers a very good weather overview as it resides on the site and adds a tremendous amount of data when the "5-Day Forecast" is selected. I feel that it is a very welcomed addition to my site.