Sweltering summer temperatures rendered the 2012 incarnation of the Nevada County Fair as primarily a night event, organizers said. While the final attendance numbers have yet to be processed, Nevada County Fair Spokeswoman Wendy Oaks noticed a dip in attendance during the day, likely due to the daytime highs that soared into triple digits. "The days seemed slow, but we had large crowds at night," Oaks said. Oaks said the below average crowds during the day do not reflect the quality of the fair that organizers worked so hard to present to the public. "On a scale of one to …