You're right in that the humidity just seemed like it wouldn't quit last year. However, June was within one degree of average and only had three days hit 90. August was three degrees above average, driven primarily by warm nights from the aforementioned humidity. A couple of notes from my spreadsheet for those months, for the few who care ha.....
On June 3rd we had a derecho come through in the afternoon from which Reading recorded an 83mph gust. That was also my first 90 degree day of the year.
August ended up being a very wet month at my house, with a total of 8.34". On August 3-4, Tropical Storm Isaias passed over the PA/NJ border and brought 5-8" to parts of eastern PA, only 2.3" for me. Some training tropical downpours rolled through on August 7th that brought perhaps some of my heaviest rates ever witnessed, with .5" falling in 5 minutes, .8" in 10 mins, and ~1.4" in 20 mins.