Here's the data (from NOAA) on the number of U.S. records broken or tied in the month of July so far:
All-Time Highest Maximum Temperature: 70
All-Time Highest Minimum Temperature: 175
Monthly Highest Maximum Temperature: 125
Monthly Highest Minimum Temperature: 330
Daily Highest Maximum Temperature: 2,125
Daily Highest Minimum Temperature: 4,787
I had to think for a bit about the meaning of the highest minimum temperatures. Those highest minimum temperatures are most likely to occur at night when you are trying to fall asleep - they are the opposite of good sleeping weather.