As you know, Western Mass is also known as the Pioneer Valley, or the 413. There are a lot of things happening here, and one good source for info is the New England Public Radio Community Calendar
http://nepr.net/community-calendar?utm_source=Event+Newsletter+8%2F24&utm_campaign=Culture+to+Do+Email+2&utm_medium=email#stream/0
A lot to enjoy! The Fall weather is an excellent time to get out!