Update: Antarctica is setting records for sea ice too.

246 Low Max Records Broken or Tied From Sept 1 to Sept 10 according to the NOAA.

A “Low Max” means that the maximum temperatures for the day was the lowest it has ever been. This indicates daytime cooling.

Below is a screenshot showing location and the biggest difference between old record and new record.

The list is just the ones I could capture in a screenshot.