Let me look...
OK, years without a 90 or greater in August...2017, high 89.3 18th. 2014, high 88.2 29th. 2013, high 87.7 10th. 2012, high 89.7 10th. 2008, high 89.5 on 5th and 21st. 1982, high 89 on 4th. and this year, so 7 years total. LOTS of years with only one or two 90+ days including 1984, 1986, 1989, 1992, 1997, 2000, 2001, 2002, 2009, 2016. Hottest I have recorded is 102 degrees on July 17th 1988 and Aug 1st 1999, 101's on Aug 20 and 21 1983, June 30th and July 9th 2012 and Aug 17 and 18 2007.