Weather app always asks me to connect to Garmin Connect to refresh data

Mine seems OK, i assume you have connected your Enduro to your phone and synced with Garmin Connect, then tried to access weather? 

I think this happens if the phone connection is disable/unavailable and the weather data gets old. This extra confirmation message is there to warn us that the data displayed is outdated. I think it's a reasonable solution.

This annoys me on Fenix6 as I rarely use Bluetooth, so it's disappointing that Garmin still requires syncing with Connect rather than just using the watch WiFi to keep weather updated.

I found an excerpt from an IoT company on the difference in power consumption of a WiFi vs. Bluetooth Low Energy.  BLE is made for sending little pieces of information to another device.

The power consumption feature is next in our comparison list. Bluetooth devices have lower power consumption, but Wi-Fi devices consume more power. This is probably because the broadcast range of the both the technologies are varied. Both the technologies emit a signal with a frequency of 2.4 gigahertz. The signals edited by iBeacon travels for about 30 feet, while Wi-Fi signals can travel over 10 times more. And that’s why Wi-Fi requires 10 times more power than BLE, even if they are performing the same tasks. Wi-Fi devices need considerable power, about 500µW for ten messages per day, while BLE consumes only 50µW.

Some applications call for more Wi-Fi electrical power, as much as 40 times the power that BLE takes up.

That feature is a major let down for me. The watch will not hold a connection with my Nokia G22 so the weather app is usually unusable.

I sync my data over Wifi but for some reason the watch can't get weather data that way. I tried the other apps available and none can do it.