Taking this quick research a step further - going back to 2000, by the last week of September, at least 2/3 of the years have moderate drought or greater conditions covering large geographic areas of New England. So to summarize over the last 22 years:
Drought isn't unusual in New England in July.
Droughts lasting large parts of the summer also aren't unusual.
Droughts usually end in the Fall and Winter for New England.
Not sure where to pull data for time periods for time periods before the year 2000, but heck, it's been dry, but eventually the pattern will change at some point, and it's not anything new.