Can I still file a federal extension for my taxes?

You should ask this question in March, not May.

@k-n-berkos 

if you live in a declated disater area with an extended due date, you can file.  if you don't, it's too late.  also, if you are due a refund an extension is not needed.  the penalties are for late filing is when you owe. there is a separate penalty for late payment