I have been trying to find out, Willi, and my current "impression" is:

that everything is likely to be ahead of schedule ( hatches) ... BUT
that has slowed a lot the last couple weeks in the colder, wetter, weather

I've called Blue Ribbon, Henry's Fork Anglers, TroutHunter and a couple
area friends in the last week or so and the "educated guesses" I've gotten
have ranged from "probably a lot like last year" to " probably close to
normal" ... in reference to hatches and fishing .. clearly the water
situation is critical in most of the West regardless of how many fish we all
catch

To put that in perspective, last year was, imho, ...poor ( compared to
what it can be ... I still caught rising fish every day and some real nice
ones, but only had two or three days when you could tell what it can really
be like on the Fork or Madison )

IMHO, if, this summer warms way up to record temps like last year ( no, Mr
George Bush Jr, global warming isn't "proven" .... no, neither is evolution
.... those silly 99% of the scientists and their junk science can't be
trusted ... you just continue to believe what the oil companies tell you to
believe, that's what you do best )
...oops, sidetracked ..... if the weather stays "normal" or cooler than
normal for the next month ... it may be really wonderful fishing around
clave time
... but, last year by mid-July the Madison(YNP), Firehole and
Gibbon were closed to fishing because the water was too hot and it was very
rare, on any area water, to find the bigger fish feeding on the surface,
hatches were just too sporadic ... even the caddis were coming off after
dark, not just late Spinner falls were the most reliable action (
besides chuck and duck ... but who the hell drives 1500 miles to nymph? )
Even the higher areas like Slough Creek were an inferno by mid-July ... my
log shows me complaining about the too damn HOT day there, on July 16th

ANYway ... I'm expecting better fishing than last year, poorer than what the
area can really provide ...but I'm no expert, and I haven't found anyone
willing to stick out his neck and really commit to a prediction ... as Willi
says, " Weird weather year."