Seems that many have reported that weather is not syncing with their device. I have a Fenix 6 Pro and keep it up-to-date.
The watch syncs with my iPhone 14 Pro Max running iOS 18.1.1.
Within the last few months, the weather widget is no longer updating. I've opened the Garmin Connect iOS app and make sure the device was connected
After syncing, still no weather data. I've seen a number of posts about this from years ago. No solution and no response from Garmin support
Also noticed that my watch no longer connects to my router's 2.4Ghz channel. My wifi router assigns an IP address to the watch using DHCP, but no data seems to be exchanged.
Fenix 6 Pro firmware v27.00 (6a5363d).