Expected temperature for the 5K on September 22

My next race will be a 5K on September 22. The race starts at 9 am and will be in the Daybreak area of South Jordan.

During the summer, races usually start around 6 am to take advantage of the cool night air. This race, however, is starting three hours later, implying that the September temperatures will be cooler. I checked my blog for last year to see what the morning temperature was, and on September 23, 2006 the temp was 44 (F). Thus, September 22, 2007 should be a great day for a race, assuming it isn't windy or storming.