Police say at 2:15 p.m. Sunday, the man assaulted the woman and temporarily disrupted business in the store.
The situation was initially handled by employees and is now under investigation.
The man is described to be a white male between the ages of 35 and 45, and standing at approximately 6 feet. He was accompanied by a woman of about the same age and two children.
Anyone with information about this case is urged to contact the Hadley Police Department at (413) 584-0883.