This app was mentioned in 3 comments, with an average of 1.33 upvotes
I see 3 different apps in the Play Store. This one seems to have the best reviews. I just restarted in New Game+ a couple days ago so this should help me a lot too.
There are 3 copies of each weather card, you need them all for the trophy.
Use this map to find gwent players: https://witcher3map.com/
and this app to track cards if you're on android https://play.google.com/store/apps/details?id=com.krovs.gwentcheck&hl=pl
Theres also an android app to track cards with information on where to find each card: https://play.google.com/store/apps/details?id=com.krovs.gwentcheck