Too late. The idea with winterizing is to catch the grass between the time it stops growing and the first hard freeze. This year that was a short window.

We had similar weather about 2 weeks ago but, of course, ten degrees warmer down here. We went from low 70s to low 20s. Literally overnight all the bermuda went dormant (brown) and 10 days later all the rest of the normal turf grasses have turned brown.