I am a news junkie, I read the Guardian first thing in the morning, and watch Channel 4 news every evening. I also read the Independent, the Washington Post, the New York Times (as well as some socialist and activist news sources from all over) and listen to news on various radio stations. Like others said, I don't turn to UK-Y for news (that's what the feminist socialists on tumblr are for!) I tend to stay abreast of a lot of American news because a lot of blogging platforms tend to have a lot of Americans on them, but I don't prioritise US news unless it is quite a big story. Considering where we are located, I think we are in a great position to get (mostly) balanced news from all over the world.
As for weather, unless it is directly affecting friends and family, or is quite awful (like that tornado that occurred earlier in the summer), it's not really my concern. There are terrible natural disasters all over the world that are equally saddening.
I've lived in the UK for six years with no intention of leaving, it would be bizarre if I still knew all the minutiae of American news. I don't even know pop culture anymore, even though I still read fluffy pop culture blogs.