killing frost, crop producers, days to freeze
Crop producers and extension field staff need to be able to evaluate how much of the growing season remains before a killing frost. The table on the next page lists DAYS TO FREEZE or how many days are remaining, from a specified date, at a given location, to the first killing frost within South Dakota.
Hall, Robert G., "Days Remaining to First Killing Frost" (2002). SDSU Extension Extra Archives. 273.