I have walked across my front lawn several times in recent weeks. No damage. Temps have been about 25 at night and 39 during the day. Several hard frosts. No snow. Unusually warm for the season. Also I seeded some grass inside in a cup. At about 70 degrees. Waited until it was about 3 inches tall. Then I moved it outside during a frost night. 25 degrees and frost all over the car and tender yourng grass. Seversly damaged. So...I am thinking that if grass has a chance to adapt slowly to the cold--no problem. But a sudden frost when the grass is still relatively lush--severd damage. Agree? disagree? Your evidence or opinion.