They are all terrible. I don't think I have ever seen a 7 day forcast that was correct past the third day.
I can't even imagine that anyone can believe this global warming crap.
They really think that they can accurately predict the temperature 50 years from now, when they can't even tell you if it's going to rain next Friday.
The only ones I have seen that are reasonably reliable is the lows that Form over Texas and come up the coast to become nor'easters. Those you can pretty much predict from more than three days out.
You forgot the sarcasm tag.