Once warmer weather returns, grass leaf tips may look brown or yellow. But the lawn will usually recover in a few weeks.
Damage can be more severe if turf receives concentrated foot traffic while it is frozen.
When that happens, individual grass plants can be killed leaving you with dead spots come spring time. The situation is quite different for lawns east of the Cascades. As days get shorter and night and day temperatures drop, grass growth slows down. Since eastern Oregon generally gets lots of sunshine during the day, grass produces plenty of sugars via photosynthesis. As sugars accumulate, water in grass crowns and rhizomes decreases.