Is This Rear Wiper Noise Normal?

It is raining here in Texas this morning. On my way to Whataburger to get some Taquitos I noticed the wiper motor sound being louder than I remember. See attached video/sound. First part is intermittent and last is constant wiping. Sound normal to you guys? Also the Taquitos hit the spot…highly recommend to our Northern folks to try if your ever see a Whataburger.

TIA

Steve