LinkedIn appears to be testing a weather notification across the header bar area. Since yesterday, hovering over the weather information icon indicates that the service is “Power by sun365”, the makers of a Google Chrome extension and the weather dashboard website sun365.me. And, yes, they say “power,” not “powered.”
This appears to be an extremely limited test trial, or an extremely slow rollout, as I was unable to find even one other person that is seeing this feature.
The big question is, why? My off-the-cuff guess is that they must believe that more people will start their morning with LinkedIn or that it may make the site more “sticky.” That seems like a long shot to me. What do you think? Is this a feature you would like to have on LinkedIn?