This cold weather reminded me of the cold weather we experienced last winter. While it is too early to tell what effect the weather might have had on the turf, it could have damaged some warm-season turf areas in north central Indiana (like our bermudagrass and zoysiagrass areas at the Daniel Turf Research Center) where there is little to no snow cover. Below are the temperature departures from normal the past 7 days as well as our current snow cover.
I have also linked last year's articles on winter kill if you want a refresher to prepare you for what might occur.
Warm-season Turf Winterkill 2014: What Can you Expect and NOW WHAT? (March 12, 2014)
Winterkill Here on Bermudagrass! Now What? (June 27, 2014)
Aaron Patton, Turfgrass Extension Specialist