@bsod It's working, thanks a lot! But I did it directly in preferences file on Mac. In my file the only difference was like empty location value and "enabled" key presence. After adding your location 349727 and removing the "enabled" key and value - it started to work. Even no reason to create preferences once again.
so instead of
"weather": {"custom_location":"","enabled":true,"onboarding":true}
it became
"weather": {"custom_location":"349727","onboarding":false}
of course after launching Opera New York location should be changed to yours