The nation's mid section enjoyed a much cooler July in 2013 compared to the sweltering heat they had to endure a year earlier. As you can see from the table below, many cities through the heart of the country experienced significantly lower temperatures in 2013. St. Louis, for example, was 12.2°F cooler in 2013 than it was in 2012. They also had zero days above 100°F while they had to deal with 15 such days last year.
This resulted in 23 heat related fatalities in July 2012. Even Wichita Falls, which is accustomed to high heat in the summer, experienced a 67% reduction in the number of 100°F+ days in 2013 (21 → 7). While the cooler weather wasn't quite as favorable for traditional summer activities such as boating and swimming, it was much nicer for most other outdoor activities.
Unfortunately, many areas are seeing much more seasonal weather in August. Here's to hoping that we don't see a heat wave like we did last summer.