Update. I've been checking back to my weather in Panama widget a couple of times and it hasn't been updating the weather as you may have noticed.
I did find out that the weather in Panama for the next week is mostly rain and thunderstorms.
I then click on the link which takes you to the wunderground page and the result is that the weather station in Panama is not reporting. Perhaps this will be fixed shortly. I'll keep my fingers crossed that the weather starts being reported to wunderground in the near future so my readers can check the weather in Panama instantly on this page.