Wiper squeak?

There are three usual causes of wiper squeak, the wiper arms get bent slightly and the blade(s) squeak. The blade material itself. And the most common, film build up on the glass. I would try washing the glass. Get some windex and wet down the glass with it then use a window squeegee sponge to scrub the glass. Then squeegee it off. Next use some Invisible glass spray on cleaner and follow the directions. Wipe off the blades as well. Now mist the glass with water and see if they still squeak.