"Grilling season ends at Labor Day, so the barbecue cuts die after it" is half true, and the half that is true is not the half most buyers expect. We measured it: for each year from 2016 through 2025, each cut's price as a ratio to the Choice cutout (so a market-wide rally or break cannot masquerade as cut seasonality), comparing the four weeks after Labor Day to the final two weeks before it.
The real fade is the burger
Ground beef 81 percent firmed into Labor Day in eight of the ten years, and then gave it back after the holiday in nine of the ten, averaging about 9 percent behind the cutout four weeks out. That is as reliable as calendar patterns get in this market. The mechanic is retail: burger features run hard into the last grilling weekend, and when the ad support rotates away in September, the grind complex loses its loudest bid while the rest of the carcass moves on.
For a buyer, the practical read is timing. Carrying heavy ground beef coverage through Labor Day at holiday-supported prices has been the wrong side of the trade almost every year in the sample. The weeks after the holiday have consistently been the cheaper side.
The barbecue cuts mostly shrug
Brisket firmed into Labor Day in seven of ten years, but the famous fade afterward barely exists: it lagged the cutout in only six of ten years, and the average move across all ten was flat. Plate short rib shows even less: it faded in four of ten years and on average ran slightly ahead of the cutout after the holiday. Whatever demand leaves with the grilling season, export and foodservice programs on these cuts apparently do not.
Pork backribs show no Labor Day pattern at all in either direction. Their seasonal exit happens earlier, off the summer peak, not at the September line.
The spring side of this calendar, when the run-up begins and peaks, is covered in the Memorial Day brisket article. This is the autumn half: one real fade, priced in ground beef, and a lot of folklore priced into everything else.