If you can make it to an Autozone or other parts store one of the guys there will probably hook you up. They are paid to do those kind of things, and if you buy a wiper blade they will put it on.Unfortunately I do.
Just to add some extra fun to my morning my passenger side wiper blade came off the arm when I was scraping my windshield off. I can't get it back on and working on it in these bone numbing temps isn't going to happen either. So I drove to work with the wiper arm sticking out so I could use the driver side to wash off the salt spray. And I'm almost out of washer fluid!