It's starting to look like the snowmelt is going to be very similar to last year, in about three weeks. That having been said, you may want to take a look back in the archives, here, and see what was happening a year ago that week, and the week before, and that should give you some idea.
The only other reliable thing, is to continue to watch trip reports that get posted from here to then, and see how things are developing. However, the snow does seem to be melting in the Sierra quite quickly.
http://cdec.water.ca.gov/cgi-progs/reports/PLOT_SWC.2008