Query: When was Tucson's record low?
Context: At the University of Arizona, where records have been kept since 1894, the record maximum temperature was 115 °F (46 °C) on June 19, 1960, and July 28, 1995, and the record minimum temperature was 6 °F (−14 °C) on January 7, 1913. There are an average of 150.1 days annually with highs of 90 °F (32 °C) or higher and an average of 26.4 days with lows reaching or below the freezing mark.