Cooling Your House Without A/C

Not necessarily a Homesteading specific thing, but more of a how to live thing for those who want to reduce their electric bill, and can tolerate some temperature variation. There are a few requirements for this particular method to work out. The first is having a house that has windows that open, as well as having blinds. Preferably good thick blackout style curtains. Second is that the house is well enough insulated that heat transfer takes a good long time. If you've got wind whistling through cracks in your walls you're fairly close to stuck with the outside temperature plus or minus a few degrees. Third is paying attention to the weather. If you have all of these, you can get by without AC and still be comfortable.