I often get asked how the number of chill hours in Georgia is changing over time. Here is a great article written by Chunxian Chen from the Southeastern Fruit and Tree Nut Research Lab in Byron, GA, in Growing Produce that answers that question. The author shows that, as expected, the number of chill hours each year is decreasing as Georgia gets warmer. The article also gives the chance that certain thresholds of chill hours will be reached in a given year. You can read more here.

Chart of chill hours 1938-2019 for Georgia