Average Weather in March in Reno Nevada, United States. In Reno, the month of March is characterized by rising daily high temperatures, with daily highs increasing by 7°F, from 54°F to 60°F over the course of the month, and rarely exceeding 72°F or dropping below 42°F. Daily low temperatures increase by 4°F, from 31°F to 35°F, rarely falling below 22°F or exceeding 44°F.