persistence

noun

1. The property of being persistent.“You've got to admire his persistence. He's asked her out every day for a month even though she keeps turning him down.”
2. Of data, the property of continuing to exist after the termination of the program.“Once written to a disk file, the data has persistence: it will still be there tomorrow when we run the next program.”
3. Continuation of the previous day's weather (particularly temperature and precipitation statistics).