Húrin I ruled during the time of the Watchful Peace, during which Sauron had retreated into the East, and the Nazgûl remained, threatening but silent, in Minas Morgul. The Peace would last long after Húrin's time; it broke with the return of Sauron to Dol Guldur during the rule of Húrin's descendant Denethor I, more than two hundred years after Húrin's death.
Húrin ruled as Steward for forty years, and was succeeded by his son, who became Túrin I.
The date of Húrin's birth appears only in The History of Middle-earth volume 12, The Peoples of Middle-earth. It cannot therefore be considered completely reliable.