I'll use some common sense from another post that I saw here that was about Sitecore 8.2 does not officially support Windows Server 2016 but is it compatible in reality and will it work in production?
Using Mark Cassidy words
It comes down to support
Based on that, I don't think Sitecore wouldn't work with MongoDB 3.2.n - where n goes from 1 to 16
- and you shouldn't face any major issues in doing so.
However, if you ended up facing issues Sitecore support will not be able to help you because accordingly to their compatible table Sitecore 8.2 only supports the following MongoDB version
- Mongo 2.6 mmapv1
- Mongo 3.0 mmapv1
- Mongo 3.0 Wired Tiger
- Mongo 3.2.1 mmapv1
- Mongo 3.2.1 Wired Tiger
- Mongo 3.2.1 Enterprise with data-at-rest encryption (Wired Tiger only)
So, until Sitecore update their compatibility table you cannot blame Sitecore over stuff that they do not support yet.
I truly believe that you should be fine doing it but keep the above in mind.