Well... I'm heading up this week for a day or two of fishing on the West Branch of the Delaware. Day time highs in the upper 60s to low 70s. Water temperatures certainly will head up into the low 50s.
The hendriksons and paraleps should be popping big time in a few days. With the water now below 1000 CFS, depending on today's rain, things are looking up! So will the fish!
If you can make it up from May 1 to May 10th I would highly advise you give it a shot. The catskills ought to be on fire!