Commonwealth Shakespeare Company (aka Shakespeare on the Common) is doing Romeo & Juliet this summer. The show runs July 19th-August 6th, performances Tuesday-Saturday at 8pm, Sundays at 7pm. One 3pm matinee on Saturday August 5th.
They usually do a visually described and sign language performance at some point in the run. I'll add that when they update their page.
This is a free, outdoor performance suitable for all ages. Also a great opportunity for a picnic.