I got out hunting this weekend in what will be my last visit to the Bob before go time. Take the following as a final briefing/caution.
Saturday was pretty sunny and warm. The South Fork at Twin Creeks bumped above 13,000 cfs, and the North Fork of the Blackfoot above 2000 cfs at Dry Gulch (which is an impressive sight). The long term forecast has temps climbing up into the 80s towards the end of the coming week.
April and May have overall been cool, and as a result snow melting has primarily occurred due to sun exposure, as opposed to temperature. Low elevations are clear, mid-elevations are mixed, and high elevations have a lot (lot!) of snow.
Combine these last two facts and I expect a few things come 0-day.
Rivers and creeks will be big. Very big. Expect significant route complications due to water hazards. If there's a big cold snap 10 days hence this could not happen, but I think that not very likely.
Snow has the potential to throw a few serious curveballs at folks. Pay very close attention to aspect and tree cover. Longer miles could be a lot faster this year.
Good luck.