As described above, and also still happening on a Google pixel 2 XL with the November 2020 Android 11 security update (the last update available for this older phone). I have both the windy animation and the meteogram desktop widgets. The latter gets my location correctly. The former does not. if I manually update the windy widget, it gets location correctly. But if it updates itself in the background it appears to use the IP address of my proxy server (this is a guess. I don't actually know where my proxy server is, but it jumps around between major cities where I think project fi might have proxy servers.) The only workaround I have found is to manually set my location in the preferences. And then of course I have to update that when I travel. At least I haven't been traveling much recently :}
