A memory sub-system is disclosed that makes accessible accumulated memory temperature statistics in relation to a target memory portion. This can be accomplished by maintaining one or more hold variables and one or more accumulation variables. The accumulation variables can be iteratively updated upon triggers such as a timer expiration or I/O event. Updating the accumulation variables can include obtaining a current temperature and tracking one or more of: a maximum, minimum, and mean temperature across the iterations. An accumulation value can track how many times the accumulation variables have been updated. When the accumulation value reaches an accumulation action threshold, the current state of the accumulation variables can be used to update the hold variables. The accumulation value and accumulation variables can then be reset and used for accumulation of additional temperature statistics.