Obviously I've had plenty of cold beer and should have been more ... useful with my prior posting, so I'll respond to myself...
Althought today is not as bad as it has been, temperatures in the Washington D.C. area have been rather ugly in the past few days (today is relatively cool) with temperatures hitting 100F (38C) most of this week. Our thermostat is part of the in-house A/C system that measures inside and outside temperatures, but it doesn't report anywhere except to us.
Local power (Pepco) failed for 35 hours with Friday's Derecho storm. Because this kind of multi-day power failure hits us at least once a year, we spent a small fortune on a whole-house natural gas driven power generator that made our life quite comfy (except for the internet (Comcast) outage, but Comcast went out after the power went down, and came back before Pepco restored it, yay!) Although a whole-house generator is probably overkill (what you *need* is something to keep core services running: refrigerator, AC/heat, and water if you're running on (tasty) well water).
We have two A/C units in our house, and the generator knows how to alternate between them, so only one of them runs at any one time, which keeps the peak usage down. For the curious, this setup cost us between about $10-11k but the ability to weather this kind of situation in almost perfect comfort was (and will continue to be) worthwhile. The power supplied by the generator is not necessarily optimal: Our A/C units freaked out a few times, complaining about bad power quality, system failure, and whining about the filters needing replacement, but after regular power came back they went back to normal. No, not optimal, but far, far better than getting baked in the heat. The generator kicks in about 30s after the power grid dies, and keeps running for about 2 minutes after regular power comes back. For your computers you really want a UPS to tide you over the short glitches.
There, I hope this is useful for someone :)