The author of Randoplan, the weather
forecasting application you've seen me use in ride announcements
(for example, for my ride this Tuesday: https://bit.ly/3wvBkEP )
has made a Chrome extension that lets you load randoplan
directly from a route's RWGPS page. As you're viewing the
route, go to extensions and chose the Randoplan extension, and
it will come up with the route information already loaded.