Blogs

http://www.msnbc.msn.com/id/43766059/ns/weather/

http://www.accuweather.com/blogs/news/story/52448/scorching-weekend-heat-just-th.asp

http://www.accuweather.com/blogs/news/story/52388/massive-heat-wave-to-engulf-na.asp

http://www.accuweather.com/blogs/news/story/50657/another-heat-wave-heading-to-t.asp

http://www.accuweather.com/blogs/news/story/49354/record-heat-surging-across-sou.asp

http://www.accuweather.com/blogs/news/story/42930/record-breaking-warmth-grips-l.asp

If you are caught with no electricity and no other way to heat, remember earth temperature is 50-ish.  That is well above freezing.  You need to dig down below the frost line in your area (here it's 24 inches).  The wind is a killer, so that's another reason to get underground.  You'll need sleeping bags, warm clothing and all that. 

If you can't dig down, maybe the ground is frozen or you don't have the tools or the strength, remember the Eskimos live on the surface in structures made of block of ice.  You might not have a way to get blocks of ice, but you can make snow igloos.

http://www.primitiveways.com/igloo.html

http://www.wikihow.com/Build-an-Igloo (adds carving longitudinal lines to channel melt so it doesn't drip on you; has video which talks about the quality of the snow)

http://www.benmeadows.com/refinfo/tips/Article1.htm

Print the instructions.  Make sure you have the necessary tools.  READ the instructions.  Make sure you understand them.  Practice, perhaps by making a styrofoam model.  Once you work through this, it will be easier to do it live, especially if doing it under stressful conditions.

Let's hear other ways to survive the cold if the electricity goes out.

http://www.accuweather.com/blogs/news/story/34059/fiery-heat-widespread-next-wee.asp