This week's Labor Day edition of WWE Monday Night Raw garnered an average viewing audience of 3,920,333 viewers on the USA Network. Below is how viewership broke down by hour:
Hour one - 4,009,000 viewers
Hour two - 3,925,000 viewers
Hour three - 3,827,000 viewers
This is the second straight week the company has failed to reach an average of 4,000,000 viewers and isn't a good sign heading into next week, where the competition will pick up significantly. If there is a silver lining to this week's number, it's that it was on a holiday and WWE never overreacts to holiday viewership numbers/television ratings.
TV by the Numbers has more data available at this link.