Epix Weather app gives wrong temps

This is the best troubleshooting guide available https://support.garmin.com/en-US/?faq=Mxs4eRXzRdAYJ0h7yyWaj9

The weather comes from your phone so you need to check app permissions. I’m in Singapore so mine always says hot and raining … blue skies and well its hot 

Thanks for the reply. I already did that troubleshooting and there is no change. I also tried to figure out where it got the numbers from but did not succeed.

Here is the forecast from my watch, and the forecast from environment Canada:

This is an expensive watch and should work better.

Did you select the same city or location on all the various devices, that is the most likely cause. Furthermore, different sources can result in different reports.

My expensive watch works flawless.

And which devices might those be? My phone is set to my local location. There doesn't seem to be a location setting on the webpage. The map in the weather app on the phone shows me in the right location.

It's nice that your watch works flawlessly but that is unhelpful. Perhaps you just live somewhere that the weather app works properly.

https://www8.garmin.com/manuals/webhelp/GUID-E5C62F3F-DCE3-4197-8CA5-E419B2A55D12/EN-US/GUID-26C3F627-A6A9-4292-8AD5-AD4A4AF80B9E.html

The location is set correctly in the watch. 

I have questions about the data that it is receiving from the weather station but have no way that I know of to see it independently of the watch. It seems like a logical step to see if the weather station is issuing the data that is presented in the weather glance. 

You could consider to enter a completely different location in you watch, on the web and on your phone. If it then ends up to be comparable on all 3 reports, it must be an issue at your location.

This is a really good idea. So I have tested it out and there is a consistent difference between the watch's current temp and the published temp for about four different places. There is also a consistent difference in the forecast, with the most dramatic difference being in the expected lows. If I get time I will make a table. A couple of the places I tried were very small towns, so the issue of multiple weather locations would be lesser. I got the weather from the government forecast. 

I was out with two people with Garmin watches today. Neither showed the same temp, or forecast as I did. I had one open Connect and sync the watch prior to comparing. (I did too) Still different. So weird. While the numbers were different, there is the same issue with them being low, and the forecast daily lows were all way too low, like on my watch. Just differently wrong than mine. I'm very curious about where this data comes from.

Honestly, I would recommend installing an alternative on your watch and stop wasting your time with the Garmin weather widget/glance.  There are plenty of posts on the forums explaining the problem in more detail, but essentially the issue is that Garmin only has access to a very limited set of forecast locations and just gives you the forecast from the nearest one.  It could be 30 miles or more (I've seen up to 50) away from your actual location, and there is no way of seeing on the watch (or in the mobile Connect app) where exactly the forecast location is for.  So it can never be trusted to be accurate or reliable and is therefore entirely worthless. 

There will be locations where users are lucky enough to have a Garmin forecast that is in their nearby locality, and for these people the forecast is likely to be always be "correct".  But even then, as soon as you head off into the bush, or mountains etc to do an activity you have no way of knowing where the updated forecasts will be coming from.

It is at least possible, though not a simple process, to ascertain where the forecast on the watch is coming from:

1. Do an activity that involves GPS.
2. Upload the activity to Garmin Connect
3. Go to the activity on garmin connect website on a PC/laptop.  Won't work on the mobile app - must be the website.
4. On the map for the activity, you will see the weather summary for your activity in the top right of the map.
5. Click the arrow to the left of the temperature and the weather summary will expand to show more detail.
6. In small text at the bottom it will say Source: followed by a number.
7. Put this number into the meteostat website and you will see the weather station being used for weather.

I have attached links for a mountain bike ride I did on the weekend.  Notice the source is 93201. Browsing to https://meteostat.net/en/station/93201 shows me that the weather station used for the forecast was at Port Taharoa.  This site is around 40kms (25 miles) from the actual location of the ride.  Furthermore, my ride was at around 400m elevation, on the leeward side of a mountain range.  The forecast location was at sea level, on the coast, on the windward side of the same range.  So, not surprisingly, the "weather" noted by Garmin Connect for my ride (and the forecast shown on my watch during the activity) is utter nonsense.  I have also attached the Google map showing this (on the Meteostat page you can click the lat/long coords for the site to open it in Google maps).  Of course results will vary but because there is no way of knowing where the forecast is really coming from it is useless as a forecasting tool on the watch.

I use Weather Pro Widget (it's actually a glance) from Connect IQ, which uses Open Weather Map and is almost always comparable to all other forecasts, such as local radio, tv weather forecast, national meteorological forecasts, surfing forecasts, etc.   

Map of activity in Garmin Connect showing weather source

Google maps showing location of forecast location compared to activity location

@KMB I didnt realise you could check the weather station information from the connect site - very useful! I second the use of Weather Pro Widget for the glance app; have used this for a number of years and is accurate (even in Singapore)