Yes it will, because passive listeners on the network won't be able to catch your password. Only your blog and your online banking will be able to get it, as is intended.

Also note that as tech-savvy people, we have more responsibility in ensuring our users are safe, even from themselves. Sure, the better thing to do would be to educate everyone so they don't reuse passwords. But it will take time, and using HTTPS in the meantime decreases the chance for them to be pwned.