I was a little bothered that this is the most power we've used since I started logging this stuff. It must be the weather, as only the air conditioning can use that sort of power:
Well that doesn't look so bad, so I lumped everything together:
The interesting thing is that the high temperature average for the month is roughly the same, but the _low_ temperature average is almost 5 degrees hotter. And there you have it - the house didn't cool down as well, so the A/C would have started earlier in the day and run longer. Bah.
Oh, and the DMARC stats, for anybody who's interested: