https://apps.garmin.com/en-US/apps/0198e564-1a57-4dd5-8ffc-a7e829b7f8e8
This works a bit differently than other weather widgets on devices that support background processes! (va-hr,735,f5 family, 935). When installed, there's a background process that gets the current conditions in the background so you always have fairly current weather info with no delay! (you can configure the app so it get's the data every 15,20,30,45 or 60 minutes).
On watches that don't support background, it will request the weather when you go to the widget.
In both cases, pressing "start" will turn on GPS to get the current location, and then request the weather for that location.
There are two data screens that rotate (time configurable).
The 1st screen shows temperature, humidity, pressure, dew point, % of cloud cover, wind speed, wind direction, a summary of the current weather, and the timestamp included in the data so you can see how current it it.
The 2nd screen shows 6 different fields: ozone level, chance of rain, viability, time zone (a city in the current time zone, and not the actual location), storm direction and storm distance.
You do need a API KEY from Darksky.net for this widget, and if you don't have one, there are details in the description in the app store.
You'll see an indication if there is an error (such as there's no phone connection the last time it tried to get the weather).