Joe Rasmussen recorded grape phenology last Thursday when I was in Wisconsin (thanks Joe!) The growing degree days are listed through today, whereas the data was recorded 5 days earlier.

GDD base 50 accumulated since April 1 = 971 (+167 departure from normal) at Mountain Grove
http://agebb.missouri.edu/weather/reports/gddTable.asp

Phenology stages according to the Modified E-L system
http://door.uwex.edu/files/2010/10/ModifiedEichhornLorennzsystem.pdf